257945048 has 16 divisors (see below), whose sum is σ = 499248960. Its totient is φ = 124812000.

The previous prime is 257945047. The next prime is 257945057. The reversal of 257945048 is 840549752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257945041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519803 + ... + 520298.

It is an arithmetic number, because the mean of its divisors is an integer number (31203060).

Almost surely, 2^257945048 is an apocalyptic number.

It is an amenable number.

257945048 is a deficient number, since it is larger than the sum of its proper divisors (241303912).

257945048 is a wasteful number, since it uses less digits than its factorization.

257945048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040138 (or 1040134 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 257945048 is about 16060.6677320714. The cubic root of 257945048 is about 636.5644751904.

The spelling of 257945048 in words is "two hundred fifty-seven million, nine hundred forty-five thousand, forty-eight".