257152579 has 2 divisors, whose sum is σ = 257152580. Its totient is φ = 257152578.

The previous prime is 257152561. The next prime is 257152583. The reversal of 257152579 is 975251752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257152579 - 2⁹ = 257152067 is a prime.

It is a super-2 number, since 2×257152579² = 132254897772702482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (257152559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128576289 + 128576290.

It is an arithmetic number, because the mean of its divisors is an integer number (128576290).

Almost surely, 2^257152579 is an apocalyptic number.

257152579 is a deficient number, since it is larger than the sum of its proper divisors (1).

257152579 is an equidigital number, since it uses as much as digits as its factorization.

257152579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 43.

The square root of 257152579 is about 16035.9776440353. The cubic root of 257152579 is about 635.9119135880.

The spelling of 257152579 in words is "two hundred fifty-seven million, one hundred fifty-two thousand, five hundred seventy-nine".