2156536 has 16 divisors (see below), whose sum is σ = 4138200. Its totient is φ = 1053024.

The previous prime is 2156521. The next prime is 2156537. The reversal of 2156536 is 6356512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156537) 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, 2791 + ... + 3478.

2^2156536 is an apocalyptic number.

It is an amenable number.

2156536 is a deficient number, since it is larger than the sum of its proper divisors (1981664).

2156536 is a wasteful number, since it uses less digits than its factorization.

2156536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6318 (or 6314 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 2156536 is about 1468.5148960770. The cubic root of 2156536 is about 129.1969429317.

The spelling of 2156536 in words is "two million, one hundred fifty-six thousand, five hundred thirty-six".