2156507001 has 48 divisors (see below), whose sum is σ = 3695372928. Its totient is φ = 1196812800.

The previous prime is 2156506951. The next prime is 2156507009. The reversal of 2156507001 is 1007056512.

2156507001 is a `hidden beast` number, since 2 + 1 + 5 + 650 + 7 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 2156507001 - 2⁷ = 2156506873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2156507009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44956 + ... + 79586.

It is an arithmetic number, because the mean of its divisors is an integer number (76986936).

Almost surely, 2^2156507001 is an apocalyptic number.

It is an amenable number.

2156507001 is a deficient number, since it is larger than the sum of its proper divisors (1538865927).

2156507001 is a wasteful number, since it uses less digits than its factorization.

2156507001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34702 (or 34699 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 2156507001 is about 46438.2062638083. The cubic root of 2156507001 is about 1291.9636382412.

The spelling of 2156507001 in words is "two billion, one hundred fifty-six million, five hundred seven thousand, one".