12638051 has 4 divisors (see below), whose sum is σ = 12646704. Its totient is φ = 12629400.

The previous prime is 12638047. The next prime is 12638057. The reversal of 12638051 is 15083621.

12638051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12638051 - 2² = 12638047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12638051.

It is not an unprimeable number, because it can be changed into a prime (12638057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (3161676).

Almost surely, 2^12638051 is an apocalyptic number.

12638051 is a deficient number, since it is larger than the sum of its proper divisors (8653).

12638051 is an equidigital number, since it uses as much as digits as its factorization.

12638051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12638051 is about 3555.0036568195. The cubic root of 12638051 is about 232.9306835749.

Subtracting from 12638051 its sum of digits (26), we obtain a square (12638025 = 3555²).

The spelling of 12638051 in words is "twelve million, six hundred thirty-eight thousand, fifty-one".