2155976 has 16 divisors (see below), whose sum is σ = 4182300. Its totient is φ = 1040704.

The previous prime is 2155963. The next prime is 2155999. The reversal of 2155976 is 6795512.

It can be written as a sum of positive squares in 2 ways, for example, as 2033476 + 122500 = 1426^2 + 350^2 .

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, 4415 + ... + 4878.

2^2155976 is an apocalyptic number.

It is an amenable number.

2155976 is a deficient number, since it is larger than the sum of its proper divisors (2026324).

2155976 is a wasteful number, since it uses less digits than its factorization.

2155976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328 (or 9324 counting only the distinct ones).

The product of its digits is 18900, while the sum is 35.

The square root of 2155976 is about 1468.3242148790. The cubic root of 2155976 is about 129.1857588613.

The spelling of 2155976 in words is "two million, one hundred fifty-five thousand, nine hundred seventy-six".