257778052 has 12 divisors (see below), whose sum is σ = 515556160. Its totient is φ = 110476296.

The previous prime is 257778049. The next prime is 257778109. The reversal of 257778052 is 250877752.

257778052 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

257778052 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4603152 + ... + 4603207.

Almost surely, 2^257778052 is an apocalyptic number.

It is an amenable number.

257778052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

257778052 is a wasteful number, since it uses less digits than its factorization.

257778052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206370 (or 9206368 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 257778052 is about 16055.4679782310. The cubic root of 257778052 is about 636.4270729661.

The spelling of 257778052 in words is "two hundred fifty-seven million, seven hundred seventy-eight thousand, fifty-two".