12553491 has 16 divisors (see below), whose sum is σ = 17408160. Its totient is φ = 8037120.

The previous prime is 12553487. The next prime is 12553493. The reversal of 12553491 is 19435521.

It is not a de Polignac number, because 12553491 - 2² = 12553487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12553493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27001 + ... + 27461.

It is an arithmetic number, because the mean of its divisors is an integer number (1088010).

Almost surely, 2^12553491 is an apocalyptic number.

12553491 is a deficient number, since it is larger than the sum of its proper divisors (4854669).

12553491 is a wasteful number, since it uses less digits than its factorization.

12553491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 5400, while the sum is 30.

The square root of 12553491 is about 3543.0906000270. The cubic root of 12553491 is about 232.4100148940.

The spelling of 12553491 in words is "twelve million, five hundred fifty-three thousand, four hundred ninety-one".