12597855 has 16 divisors (see below), whose sum is σ = 21217920. Its totient is φ = 6365088.

The previous prime is 12597847. The next prime is 12597863. The reversal of 12597855 is 55879521.

12597855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12597847) and next prime (12597863).

It is not a de Polignac number, because 12597855 - 2³ = 12597847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21817 + ... + 22386.

It is an arithmetic number, because the mean of its divisors is an integer number (1326120).

Almost surely, 2^12597855 is an apocalyptic number.

12597855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12597855 is a deficient number, since it is larger than the sum of its proper divisors (8620065).

12597855 is a wasteful number, since it uses less digits than its factorization.

12597855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44230.

The product of its digits is 126000, while the sum is 42.

The square root of 12597855 is about 3549.3457143536. The cubic root of 12597855 is about 232.6834717826.

The spelling of 12597855 in words is "twelve million, five hundred ninety-seven thousand, eight hundred fifty-five".