12556215 has 80 divisors (see below), whose sum is σ = 26577408. Its totient is φ = 5552064.

The previous prime is 12556213. The next prime is 12556223. The reversal of 12556215 is 51265521.

It is not a de Polignac number, because 12556215 - 2¹ = 12556213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12556211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 121854 + ... + 121956.

Almost surely, 2^12556215 is an apocalyptic number.

12556215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12556215 is an abundant number, since it is smaller than the sum of its proper divisors (14021193).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12556215 is a wasteful number, since it uses less digits than its factorization.

12556215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 161 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 12556215 is about 3543.4749893290. The cubic root of 12556215 is about 232.4268240057.

The spelling of 12556215 in words is "twelve million, five hundred fifty-six thousand, two hundred fifteen".