12557115 has 12 divisors (see below), whose sum is σ = 21765744. Its totient is φ = 6697104.

The previous prime is 12557113. The next prime is 12557141. The reversal of 12557115 is 51175521.

It is not a de Polignac number, because 12557115 - 2¹ = 12557113 is a prime.

It is a super-2 number, since 2×12557115² = 315362274246450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12557113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139479 + ... + 139568.

It is an arithmetic number, because the mean of its divisors is an integer number (1813812).

Almost surely, 2^12557115 is an apocalyptic number.

12557115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12557115 is a deficient number, since it is larger than the sum of its proper divisors (9208629).

12557115 is a wasteful number, since it uses less digits than its factorization.

12557115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279058 (or 279055 counting only the distinct ones).

The product of its digits is 1750, while the sum is 27.

The square root of 12557115 is about 3543.6019810357. The cubic root of 12557115 is about 232.4323771426.

The spelling of 12557115 in words is "twelve million, five hundred fifty-seven thousand, one hundred fifteen".