2156877 has 12 divisors (see below), whose sum is σ = 3182400. Its totient is φ = 1407048.

The previous prime is 2156873. The next prime is 2156879. The reversal of 2156877 is 7786512.

2156877 is a `hidden beast` number, since 21 + 568 + 77 = 666.

It is not a de Polignac number, because 2156877 - 2² = 2156873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156873) 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, 2127 + ... + 2972.

It is an arithmetic number, because the mean of its divisors is an integer number (265200).

2^2156877 is an apocalyptic number.

It is an amenable number.

2156877 is a deficient number, since it is larger than the sum of its proper divisors (1025523).

2156877 is a wasteful number, since it uses less digits than its factorization.

2156877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152 (or 5149 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 2156877 is about 1468.6309951788. The cubic root of 2156877 is about 129.2037522833.

The spelling of 2156877 in words is "two million, one hundred fifty-six thousand, eight hundred seventy-seven".