12555879 has 8 divisors (see below), whose sum is σ = 19132800. Its totient is φ = 7174776.

The previous prime is 12555863. The next prime is 12555931. The reversal of 12555879 is 97855521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12555879 - 2⁴ = 12555863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12555879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298929 + ... + 298970.

It is an arithmetic number, because the mean of its divisors is an integer number (2391600).

Almost surely, 2^12555879 is an apocalyptic number.

12555879 is a deficient number, since it is larger than the sum of its proper divisors (6576921).

12555879 is an equidigital number, since it uses as much as digits as its factorization.

12555879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597909.

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

The square root of 12555879 is about 3543.4275779251. The cubic root of 12555879 is about 232.4247507665.

The spelling of 12555879 in words is "twelve million, five hundred fifty-five thousand, eight hundred seventy-nine".