13156057 has 4 divisors (see below), whose sum is σ = 13259776. Its totient is φ = 13052340.

The previous prime is 13156043. The next prime is 13156063. The reversal of 13156057 is 75065131.

13156057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75065131 = 373 ⋅201247.

It is a cyclic number.

It is not a de Polignac number, because 13156057 - 2⁷ = 13155929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51669 + ... + 51922.

It is an arithmetic number, because the mean of its divisors is an integer number (3314944).

Almost surely, 2^13156057 is an apocalyptic number.

It is an amenable number.

13156057 is a deficient number, since it is larger than the sum of its proper divisors (103719).

13156057 is a wasteful number, since it uses less digits than its factorization.

13156057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103718.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 13156057 is about 3627.1279271622. The cubic root of 13156057 is about 236.0706063277.

The spelling of 13156057 in words is "thirteen million, one hundred fifty-six thousand, fifty-seven".