13162157 has 4 divisors (see below), whose sum is σ = 13203996. Its totient is φ = 13120320.

The previous prime is 13162151. The next prime is 13162169. The reversal of 13162157 is 75126131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75126131 = 1297 ⋅57923.

It can be written as a sum of positive squares in 2 ways, for example, as 5621641 + 7540516 = 2371^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 13162157 - 2¹⁰ = 13161133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13162151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20444 + ... + 21077.

It is an arithmetic number, because the mean of its divisors is an integer number (3300999).

Almost surely, 2^13162157 is an apocalyptic number.

It is an amenable number.

13162157 is a deficient number, since it is larger than the sum of its proper divisors (41839).

13162157 is an equidigital number, since it uses as much as digits as its factorization.

13162157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41838.

The product of its digits is 1260, while the sum is 26.

The square root of 13162157 is about 3627.9687154109. The cubic root of 13162157 is about 236.1070865637.

Adding to 13162157 its reverse (75126131), we get a palindrome (88288288).

The spelling of 13162157 in words is "thirteen million, one hundred sixty-two thousand, one hundred fifty-seven".