13157155 has 32 divisors (see below), whose sum is σ = 18221760. Its totient is φ = 9031680.

The previous prime is 13157153. The next prime is 13157159. The reversal of 13157155 is 55175131.

13157155 = T₃₁₄ + T₃₁₅ + ... + T₄₇₈.

13157155 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 13157155 - 2¹ = 13157153 is a prime.

It is a super-2 number, since 2×13157155² = 346221455388050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13157153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116379 + ... + 116491.

It is an arithmetic number, because the mean of its divisors is an integer number (569430).

Almost surely, 2^13157155 is an apocalyptic number.

13157155 is a deficient number, since it is larger than the sum of its proper divisors (5064605).

13157155 is a wasteful number, since it uses less digits than its factorization.

13157155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its digits is 2625, while the sum is 28.

The square root of 13157155 is about 3627.2792834299. The cubic root of 13157155 is about 236.0771736023.

The spelling of 13157155 in words is "thirteen million, one hundred fifty-seven thousand, one hundred fifty-five".