2156157 has 12 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 1423368.

The previous prime is 2156123. The next prime is 2156159. The reversal of 2156157 is 7516512.

It is not a de Polignac number, because 2156157 - 2¹⁰ = 2155133 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2156157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

2^2156157 is an apocalyptic number.

It is an amenable number.

2156157 is a deficient number, since it is larger than the sum of its proper divisors (988803).

2156157 is a wasteful number, since it uses less digits than its factorization.

2156157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2349 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 2156157 is about 1468.3858484744. The cubic root of 2156157 is about 129.1893739244.

The spelling of 2156157 in words is "two million, one hundred fifty-six thousand, one hundred fifty-seven".