257550460 has 12 divisors (see below), whose sum is σ = 540856008. Its totient is φ = 103020176.

The previous prime is 257550457. The next prime is 257550467. The reversal of 257550460 is 64055752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257550467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6438742 + ... + 6438781.

It is an arithmetic number, because the mean of its divisors is an integer number (45071334).

Almost surely, 2^257550460 is an apocalyptic number.

257550460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257550460 is an abundant number, since it is smaller than the sum of its proper divisors (283305548).

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

257550460 is a wasteful number, since it uses less digits than its factorization.

257550460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12877532 (or 12877530 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 257550460 is about 16048.3787343146. The cubic root of 257550460 is about 636.2397175283.

It can be divided in two parts, 2575 and 50460, that added together give a palindrome (53035).

The spelling of 257550460 in words is "two hundred fifty-seven million, five hundred fifty thousand, four hundred sixty".