257566113 has 12 divisors (see below), whose sum is σ = 425188608. Its totient is φ = 147180600.

The previous prime is 257566091. The next prime is 257566117. The reversal of 257566113 is 311665752.

257566113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 257566113 - 2¹⁴ = 257549729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257566117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2044113 + ... + 2044238.

It is an arithmetic number, because the mean of its divisors is an integer number (35432384).

Almost surely, 2^257566113 is an apocalyptic number.

It is an amenable number.

257566113 is a deficient number, since it is larger than the sum of its proper divisors (167622495).

257566113 is a wasteful number, since it uses less digits than its factorization.

257566113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088364 (or 4088361 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 257566113 is about 16048.8664085661. The cubic root of 257566113 is about 636.2526067288.

The spelling of 257566113 in words is "two hundred fifty-seven million, five hundred sixty-six thousand, one hundred thirteen".