13905257 has 8 divisors (see below), whose sum is σ = 14113440. Its totient is φ = 13698880.

The previous prime is 13905251. The next prime is 13905293. The reversal of 13905257 is 75250931.

13905257 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 13905257 - 2⁶ = 13905193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13905251) 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, 23153 + ... + 23745.

It is an arithmetic number, because the mean of its divisors is an integer number (1764180).

Almost surely, 2^13905257 is an apocalyptic number.

It is an amenable number.

13905257 is a deficient number, since it is larger than the sum of its proper divisors (208183).

13905257 is a wasteful number, since it uses less digits than its factorization.

13905257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 13905257 is about 3728.9753284247. The cubic root of 13905257 is about 240.4693189193.

The spelling of 13905257 in words is "thirteen million, nine hundred five thousand, two hundred fifty-seven".