257074545 has 32 divisors (see below), whose sum is σ = 506241792. Its totient is φ = 108479232.

The previous prime is 257074513. The next prime is 257074553. The reversal of 257074545 is 545470752.

It is not a de Polignac number, because 257074545 - 2⁵ = 257074513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92802 + ... + 95531.

It is an arithmetic number, because the mean of its divisors is an integer number (15820056).

Almost surely, 2^257074545 is an apocalyptic number.

It is an amenable number.

257074545 is a deficient number, since it is larger than the sum of its proper divisors (249167247).

257074545 is a wasteful number, since it uses less digits than its factorization.

257074545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188361.

The product of its (nonzero) digits is 196000, while the sum is 39.

The square root of 257074545 is about 16033.5443679805. The cubic root of 257074545 is about 635.8475837250.

The spelling of 257074545 in words is "two hundred fifty-seven million, seventy-four thousand, five hundred forty-five".