52157056 has 32 divisors (see below), whose sum is σ = 118752480. Its totient is φ = 22352640.

The previous prime is 52157029. The next prime is 52157057. The reversal of 52157056 is 65075125.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (52157057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28210 + ... + 30001.

It is an arithmetic number, because the mean of its divisors is an integer number (3711015).

Almost surely, 2^52157056 is an apocalyptic number.

52157056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

52157056 is an abundant number, since it is smaller than the sum of its proper divisors (66595424).

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

52157056 is an equidigital number, since it uses as much as digits as its factorization.

52157056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58232 (or 58220 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 52157056 is about 7221.9842148817. The cubic root of 52157056 is about 373.6265157324.

The spelling of 52157056 in words is "fifty-two million, one hundred fifty-seven thousand, fifty-six".