13091497 has 2 divisors, whose sum is σ = 13091498. Its totient is φ = 13091496.

The previous prime is 13091473. The next prime is 13091501. The reversal of 13091497 is 79419031.

13091497 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9865881 + 3225616 = 3141^2 + 1796^2 .

It is a cyclic number.

It is not a de Polignac number, because 13091497 - 2⁷ = 13091369 is a prime.

It is not a weakly prime, because it can be changed into another prime (13091417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6545748 + 6545749.

It is an arithmetic number, because the mean of its divisors is an integer number (6545749).

Almost surely, 2^13091497 is an apocalyptic number.

It is an amenable number.

13091497 is a deficient number, since it is larger than the sum of its proper divisors (1).

13091497 is an equidigital number, since it uses as much as digits as its factorization.

13091497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 13091497 is about 3618.2173787654. The cubic root of 13091497 is about 235.6838208211.

The spelling of 13091497 in words is "thirteen million, ninety-one thousand, four hundred ninety-seven".