13397551 has 2 divisors, whose sum is σ = 13397552. Its totient is φ = 13397550.

The previous prime is 13397539. The next prime is 13397557. The reversal of 13397551 is 15579331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13397551 - 2⁹ = 13397039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13397557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6698775 + 6698776.

It is an arithmetic number, because the mean of its divisors is an integer number (6698776).

Almost surely, 2^13397551 is an apocalyptic number.

13397551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13397551 is an equidigital number, since it uses as much as digits as its factorization.

13397551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 34.

The square root of 13397551 is about 3660.2665203507. The cubic root of 13397551 is about 237.5063030645.

The spelling of 13397551 in words is "thirteen million, three hundred ninety-seven thousand, five hundred fifty-one".