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55130112 = 21133997
BaseRepresentation
bin1101001001001…
…1100000000000
310211201220022000
43102103200000
5103103130422
65245344000
71236412122
oct322234000
9124656260
1055130112
1129135084
1216568000
13b56348b
147471212
154c8ecac
hex3493800

55130112 has 96 divisors (see below), whose sum is σ = 163472400. Its totient is φ = 18358272.

The previous prime is 55130063. The next prime is 55130161. The reversal of 55130112 is 21103155.

55130112 is a `hidden beast` number, since 551 + 3 + 0 + 112 = 666.

It is an interprime number because it is at equal distance from previous prime (55130063) and next prime (55130161).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54798 + ... + 55794.

Almost surely, 255130112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55130112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81736200).

55130112 is an abundant number, since it is smaller than the sum of its proper divisors (108342288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55130112 is an equidigital number, since it uses as much as digits as its factorization.

55130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 55130112 is about 7424.9654544651. The cubic root of 55130112 is about 380.5948946074.

Adding to 55130112 its reverse (21103155), we get a palindrome (76233267).

The spelling of 55130112 in words is "fifty-five million, one hundred thirty thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 512 576 768 864 997 1024 1152 1536 1728 1994 2048 2304 2991 3072 3456 3988 4608 5982 6144 6912 7976 8973 9216 11964 13824 15952 17946 18432 23928 26919 27648 31904 35892 47856 53838 55296 63808 71784 95712 107676 127616 143568 191424 215352 255232 287136 382848 430704 510464 574272 765696 861408 1020928 1148544 1531392 1722816 2041856 2297088 3062784 3445632 4594176 6125568 6891264 9188352 13782528 18376704 27565056 55130112