257314553 has 4 divisors (see below), whose sum is σ = 257976420. Its totient is φ = 256652688.

The previous prime is 257314481. The next prime is 257314583. The reversal of 257314553 is 355413752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127057984 + 130256569 = 11272^2 + 11413^2 .

It is a cyclic number.

It is not a de Polignac number, because 257314553 - 2¹² = 257310457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257314583) 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, 330350 + ... + 331127.

It is an arithmetic number, because the mean of its divisors is an integer number (64494105).

Almost surely, 2^257314553 is an apocalyptic number.

It is an amenable number.

257314553 is a deficient number, since it is larger than the sum of its proper divisors (661867).

257314553 is an equidigital number, since it uses as much as digits as its factorization.

257314553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661866.

The product of its digits is 63000, while the sum is 35.

The square root of 257314553 is about 16041.0271803273. The cubic root of 257314553 is about 636.0454005867.

The spelling of 257314553 in words is "two hundred fifty-seven million, three hundred fourteen thousand, five hundred fifty-three".