257856052 has 24 divisors (see below), whose sum is σ = 478202760. Its totient is φ = 121443840.

The previous prime is 257856043. The next prime is 257856073. The reversal of 257856052 is 250658752.

257856052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3006756 + 254849296 = 1734^2 + 15964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257855996 and 257856014.

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, 22353 + ... + 31864.

It is an arithmetic number, because the mean of its divisors is an integer number (19925115).

Almost surely, 2^257856052 is an apocalyptic number.

It is an amenable number.

257856052 is a deficient number, since it is larger than the sum of its proper divisors (220346708).

257856052 is a wasteful number, since it uses less digits than its factorization.

257856052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54291 (or 54289 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 257856052 is about 16057.8968735012. The cubic root of 257856052 is about 636.4912577758.

The spelling of 257856052 in words is "two hundred fifty-seven million, eight hundred fifty-six thousand, fifty-two".