257974449 has 16 divisors (see below), whose sum is σ = 346767360. Its totient is φ = 170588880.

The previous prime is 257974441. The next prime is 257974469. The reversal of 257974449 is 944479752.

It is not a de Polignac number, because 257974449 - 2³ = 257974441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257974441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236784 + ... + 237870.

It is an arithmetic number, because the mean of its divisors is an integer number (21672960).

Almost surely, 2^257974449 is an apocalyptic number.

It is an amenable number.

257974449 is a deficient number, since it is larger than the sum of its proper divisors (88792911).

257974449 is a wasteful number, since it uses less digits than its factorization.

257974449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its digits is 2540160, while the sum is 51.

The square root of 257974449 is about 16061.5830166270. The cubic root of 257974449 is about 636.5886598261.

It can be divided in two parts, 2579 and 74449, that added together give a triangular number (77028 = T₃₉₂).

The spelling of 257974449 in words is "two hundred fifty-seven million, nine hundred seventy-four thousand, four hundred forty-nine".