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55160 = 2357197
BaseRepresentation
bin1101011101111000
32210122222
431131320
53231120
61103212
7316550
oct153570
983588
1055160
1138496
1227b08
131c151
1416160
1511525
hexd778

55160 has 32 divisors (see below), whose sum is σ = 142560. Its totient is φ = 18816.

The previous prime is 55147. The next prime is 55163. The reversal of 55160 is 6155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55163) by changing a digit.

55160 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 378.

It is an arithmetic number, because the mean of its divisors is an integer number (4455).

255160 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 55160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71280).

55160 is an abundant number, since it is smaller than the sum of its proper divisors (87400).

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

55160 is a wasteful number, since it uses less digits than its factorization.

55160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55160 is about 234.8616614094. The cubic root of 55160 is about 38.0663660204.

The spelling of 55160 in words is "fifty-five thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 197 280 394 788 985 1379 1576 1970 2758 3940 5516 6895 7880 11032 13790 27580 55160