257970159 has 12 divisors (see below), whose sum is σ = 378732952. Its totient is φ = 169160400.

The previous prime is 257970137. The next prime is 257970187. The reversal of 257970159 is 951079752.

257970159 is a `hidden beast` number, since 2 + 579 + 70 + 1 + 5 + 9 = 666.

It is not a de Polignac number, because 257970159 - 2¹³ = 257961967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257970199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234397 + ... + 235494.

Almost surely, 2^257970159 is an apocalyptic number.

257970159 is a deficient number, since it is larger than the sum of its proper divisors (120762793).

257970159 is a wasteful number, since it uses less digits than its factorization.

257970159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469958 (or 469955 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 257970159 is about 16061.4494675916. The cubic root of 257970159 is about 636.5851310781.

The spelling of 257970159 in words is "two hundred fifty-seven million, nine hundred seventy thousand, one hundred fifty-nine".