2056685172 has 24 divisors (see below), whose sum is σ = 5051508000. Its totient is φ = 649479456.

The previous prime is 2056685161. The next prime is 2056685179. The reversal of 2056685172 is 2715866502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056685179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4510047 + ... + 4510502.

It is an arithmetic number, because the mean of its divisors is an integer number (210479500).

Almost surely, 2^2056685172 is an apocalyptic number.

It is an amenable number.

2056685172 is an abundant number, since it is smaller than the sum of its proper divisors (2994822828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2056685172 is a wasteful number, since it uses less digits than its factorization.

2056685172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020575 (or 9020573 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 2056685172 is about 45350.6909759929. The cubic root of 2056685172 is about 1271.7134728028.

The spelling of 2056685172 in words is "two billion, fifty-six million, six hundred eighty-five thousand, one hundred seventy-two".