13956257 has 8 divisors (see below), whose sum is σ = 16175232. Its totient is φ = 11793600.

The previous prime is 13956247. The next prime is 13956311. The reversal of 13956257 is 75265931.

It is a happy number.

13956257 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 sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13956257 - 2¹⁰ = 13955233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13956257.

It is not an unprimeable number, because it can be changed into a prime (13956247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13544 + ... + 14537.

It is an arithmetic number, because the mean of its divisors is an integer number (2021904).

Almost surely, 2^13956257 is an apocalyptic number.

It is an amenable number.

13956257 is a deficient number, since it is larger than the sum of its proper divisors (2218975).

13956257 is an equidigital number, since it uses as much as digits as its factorization.

13956257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28159.

The product of its digits is 56700, while the sum is 38.

The square root of 13956257 is about 3735.8074093829. The cubic root of 13956257 is about 240.7629482125.

The spelling of 13956257 in words is "thirteen million, nine hundred fifty-six thousand, two hundred fifty-seven".