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52155996 = 223231011871
BaseRepresentation
bin1100011011110…
…1011001011100
310122010210120120
43012331121130
5101322442441
65101514540
71202214204
oct306753134
9118123516
1052155996
1127493632
1215572a50
13aa61849
146cd9404
1548a3966
hex31bd65c

52155996 has 48 divisors (see below), whose sum is σ = 128314368. Its totient is φ = 16456000.

The previous prime is 52155967. The next prime is 52156003. The reversal of 52155996 is 69955125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26941 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (2673216).

Almost surely, 252155996 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 52155996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64157184).

52155996 is an abundant number, since it is smaller than the sum of its proper divisors (76158372).

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

52155996 is a wasteful number, since it uses less digits than its factorization.

52155996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its digits is 121500, while the sum is 42.

The square root of 52155996 is about 7221.9108274750. The cubic root of 52155996 is about 373.6239846157.

It can be divided in two parts, 5215 and 5996, that added together give a palindrome (11211).

The spelling of 52155996 in words is "fifty-two million, one hundred fifty-five thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 12 23 46 69 92 101 138 202 276 303 404 606 1212 1871 2323 3742 4646 5613 6969 7484 9292 11226 13938 22452 27876 43033 86066 129099 172132 188971 258198 377942 516396 566913 755884 1133826 2267652 4346333 8692666 13038999 17385332 26077998 52155996