257160115 has 4 divisors (see below), whose sum is σ = 308592144. Its totient is φ = 205728088.

The previous prime is 257160107. The next prime is 257160131. The reversal of 257160115 is 511061752.

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

It is a cyclic number.

It is not a de Polignac number, because 257160115 - 2³ = 257160107 is a prime.

It is a super-2 number, since 2×257160115² = 132262649493626450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25716007 + ... + 25716016.

It is an arithmetic number, because the mean of its divisors is an integer number (77148036).

Almost surely, 2^257160115 is an apocalyptic number.

257160115 is a deficient number, since it is larger than the sum of its proper divisors (51432029).

257160115 is an equidigital number, since it uses as much as digits as its factorization.

257160115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51432028.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 257160115 is about 16036.2126139560. The cubic root of 257160115 is about 635.9181254453.

The spelling of 257160115 in words is "two hundred fifty-seven million, one hundred sixty thousand, one hundred fifteen".