12631551 has 8 divisors (see below), whose sum is σ = 17233920. Its totient is φ = 8225112.

The previous prime is 12631529. The next prime is 12631573. The reversal of 12631551 is 15513621.

It is an interprime number because it is at equal distance from previous prime (12631529) and next prime (12631573).

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

It is not a de Polignac number, because 12631551 - 2⁵ = 12631519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631511) 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, 48831 + ... + 49088.

It is an arithmetic number, because the mean of its divisors is an integer number (2154240).

Almost surely, 2^12631551 is an apocalyptic number.

12631551 is a deficient number, since it is larger than the sum of its proper divisors (4602369).

12631551 is an equidigital number, since it uses as much as digits as its factorization.

12631551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97965.

The product of its digits is 900, while the sum is 24.

The square root of 12631551 is about 3554.0893348367. The cubic root of 12631551 is about 232.8907431051.

The spelling of 12631551 in words is "twelve million, six hundred thirty-one thousand, five hundred fifty-one".