257116315 has 4 divisors (see below), whose sum is σ = 308539584. Its totient is φ = 205693048.

The previous prime is 257116309. The next prime is 257116331. The reversal of 257116315 is 513611752.

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 257116315 - 2¹³ = 257108123 is a prime.

It is a super-2 number, since 2×257116315² = 132217598878358450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25711627 + ... + 25711636.

It is an arithmetic number, because the mean of its divisors is an integer number (77134896).

Almost surely, 2^257116315 is an apocalyptic number.

257116315 is a deficient number, since it is larger than the sum of its proper divisors (51423269).

257116315 is an equidigital number, since it uses as much as digits as its factorization.

257116315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51423268.

The product of its digits is 6300, while the sum is 31.

The square root of 257116315 is about 16034.8468966810. The cubic root of 257116315 is about 635.8820198004.

The spelling of 257116315 in words is "two hundred fifty-seven million, one hundred sixteen thousand, three hundred fifteen".