13478251 has 2 divisors, whose sum is σ = 13478252. Its totient is φ = 13478250.

The previous prime is 13478203. The next prime is 13478261. The reversal of 13478251 is 15287431.

13478251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13478251 - 2⁷ = 13478123 is a prime.

It is equal to p₈₇₈₃₂₃ and since 13478251 and 878323 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13478261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739125 + 6739126.

It is an arithmetic number, because the mean of its divisors is an integer number (6739126).

Almost surely, 2^13478251 is an apocalyptic number.

13478251 is a deficient number, since it is larger than the sum of its proper divisors (1).

13478251 is an equidigital number, since it uses as much as digits as its factorization.

13478251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 13478251 is about 3671.2737571584. The cubic root of 13478251 is about 237.9822209726.

The spelling of 13478251 in words is "thirteen million, four hundred seventy-eight thousand, two hundred fifty-one".