2156524 has 12 divisors (see below), whose sum is σ = 3785544. Its totient is φ = 1074944.

The previous prime is 2156521. The next prime is 2156537. The reversal of 2156524 is 4256512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156521) 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, 1164 + ... + 2380.

It is an arithmetic number, because the mean of its divisors is an integer number (315462).

2^2156524 is an apocalyptic number.

It is an amenable number.

2156524 is a deficient number, since it is larger than the sum of its proper divisors (1629020).

2156524 is a wasteful number, since it uses less digits than its factorization.

2156524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1662 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2156524 is about 1468.5108103109. The cubic root of 2156524 is about 129.1967032933.

The spelling of 2156524 in words is "two million, one hundred fifty-six thousand, five hundred twenty-four".