257345112 has 32 divisors (see below), whose sum is σ = 647092080. Its totient is φ = 85284480.

The previous prime is 257345111. The next prime is 257345113. The reversal of 257345112 is 211543752.

It is an interprime number because it is at equal distance from previous prime (257345111) and next prime (257345113).

It is a self number, because there is not a number n which added to its sum of digits gives 257345112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257345111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26839 + ... + 35142.

Almost surely, 2^257345112 is an apocalyptic number.

It is an amenable number.

257345112 is an abundant number, since it is smaller than the sum of its proper divisors (389746968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257345112 is a wasteful number, since it uses less digits than its factorization.

257345112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62163 (or 62159 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 257345112 is about 16041.9796783315. The cubic root of 257345112 is about 636.0705787739.

Adding to 257345112 its reverse (211543752), we get a palindrome (468888864).

The spelling of 257345112 in words is "two hundred fifty-seven million, three hundred forty-five thousand, one hundred twelve".