13264921 has 2 divisors, whose sum is σ = 13264922. Its totient is φ = 13264920.

The previous prime is 13264891. The next prime is 13264939. The reversal of 13264921 is 12946231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11999296 + 1265625 = 3464^2 + 1125^2 .

It is a cyclic number.

It is not a de Polignac number, because 13264921 - 2⁹ = 13264409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13264921.

It is not a weakly prime, because it can be changed into another prime (13264421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6632460 + 6632461.

It is an arithmetic number, because the mean of its divisors is an integer number (6632461).

Almost surely, 2^13264921 is an apocalyptic number.

It is an amenable number.

13264921 is a deficient number, since it is larger than the sum of its proper divisors (1).

13264921 is an equidigital number, since it uses as much as digits as its factorization.

13264921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 13264921 is about 3642.1039249313. The cubic root of 13264921 is about 236.7199657339.

The spelling of 13264921 in words is "thirteen million, two hundred sixty-four thousand, nine hundred twenty-one".