13715591 has 2 divisors, whose sum is σ = 13715592. Its totient is φ = 13715590.

The previous prime is 13715561. The next prime is 13715593. The reversal of 13715591 is 19551731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13715591 - 2¹⁰ = 13714567 is a prime.

Together with 13715593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13715593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6857795 + 6857796.

It is an arithmetic number, because the mean of its divisors is an integer number (6857796).

Almost surely, 2^13715591 is an apocalyptic number.

13715591 is a deficient number, since it is larger than the sum of its proper divisors (1).

13715591 is an equidigital number, since it uses as much as digits as its factorization.

13715591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4725, while the sum is 32.

The square root of 13715591 is about 3703.4566286106. The cubic root of 13715591 is about 239.3709859644.

The spelling of 13715591 in words is "thirteen million, seven hundred fifteen thousand, five hundred ninety-one".