2153972 has 12 divisors (see below), whose sum is σ = 3833760. Its totient is φ = 1058616.

The previous prime is 2153959. The next prime is 2153981. The reversal of 2153972 is 2793512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (319480).

2^2153972 is an apocalyptic number.

It is an amenable number.

2153972 is a deficient number, since it is larger than the sum of its proper divisors (1679788).

2153972 is a wasteful number, since it uses less digits than its factorization.

2153972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9190 (or 9188 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 2153972 is about 1467.6416456342. The cubic root of 2153972 is about 129.1457199933.

It can be divided in two parts, 2153 and 972, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2153972 in words is "two million, one hundred fifty-three thousand, nine hundred seventy-two".