257057562 has 8 divisors (see below), whose sum is σ = 514115136. Its totient is φ = 85685852.

The previous prime is 257057533. The next prime is 257057573. The reversal of 257057562 is 265750752.

257057562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

257057562 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 257057562.

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, 21421458 + ... + 21421469.

It is an arithmetic number, because the mean of its divisors is an integer number (64264392).

Almost surely, 2^257057562 is an apocalyptic number.

257057562 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.

257057562 is a wasteful number, since it uses less digits than its factorization.

257057562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42842932.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 257057562 is about 16033.0147508196. The cubic root of 257057562 is about 635.8335815124.

The spelling of 257057562 in words is "two hundred fifty-seven million, fifty-seven thousand, five hundred sixty-two".