52156573172 has 48 divisors (see below), whose sum is σ = 107002461888. Its totient is φ = 21979921920.

The previous prime is 52156573169. The next prime is 52156573187. The reversal of 52156573172 is 27137565125.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 470243 + ... + 570474.

It is an arithmetic number, because the mean of its divisors is an integer number (2229217956).

Almost surely, 2^52156573172 is an apocalyptic number.

It is an amenable number.

52156573172 is an abundant number, since it is smaller than the sum of its proper divisors (54845888716).

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

52156573172 is a wasteful number, since it uses less digits than its factorization.

52156573172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040816 (or 1040814 counting only the distinct ones).

The product of its digits is 441000, while the sum is 44.

The spelling of 52156573172 in words is "fifty-two billion, one hundred fifty-six million, five hundred seventy-three thousand, one hundred seventy-two".