12553891 has 8 divisors (see below), whose sum is σ = 14434560. Its totient is φ = 10695048.

The previous prime is 12553859. The next prime is 12553901. The reversal of 12553891 is 19835521.

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

It is not a de Polignac number, because 12553891 - 2⁵ = 12553859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12553691) 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, 4201 + ... + 6538.

It is an arithmetic number, because the mean of its divisors is an integer number (1804320).

Almost surely, 2^12553891 is an apocalyptic number.

12553891 is a deficient number, since it is larger than the sum of its proper divisors (1880669).

12553891 is a wasteful number, since it uses less digits than its factorization.

12553891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913.

The product of its digits is 10800, while the sum is 34.

The square root of 12553891 is about 3543.1470474707. The cubic root of 12553891 is about 232.4124833447.

The spelling of 12553891 in words is "twelve million, five hundred fifty-three thousand, eight hundred ninety-one".