13513651 has 2 divisors, whose sum is σ = 13513652. Its totient is φ = 13513650.

The previous prime is 13513631. The next prime is 13513663. The reversal of 13513651 is 15631531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13513651 is a prime.

It is not a weakly prime, because it can be changed into another prime (13513601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6756825 + 6756826.

It is an arithmetic number, because the mean of its divisors is an integer number (6756826).

Almost surely, 2^13513651 is an apocalyptic number.

13513651 is a deficient number, since it is larger than the sum of its proper divisors (1).

13513651 is an equidigital number, since it uses as much as digits as its factorization.

13513651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 25.

The square root of 13513651 is about 3676.0918106054. The cubic root of 13513651 is about 238.1903885799.

The spelling of 13513651 in words is "thirteen million, five hundred thirteen thousand, six hundred fifty-one".