2056554864 has 120 divisors (see below), whose sum is σ = 7083734112. Its totient is φ = 542384640.

The previous prime is 2056554853. The next prime is 2056554887. The reversal of 2056554864 is 4684556502.

2056554864 is a `hidden beast` number, since 2 + 0 + 565 + 5 + 4 + 86 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65367 + ... + 91574.

Almost surely, 2^2056554864 is an apocalyptic number.

2056554864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2056554864 is an abundant number, since it is smaller than the sum of its proper divisors (5027179248).

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

2056554864 is a wasteful number, since it uses less digits than its factorization.

2056554864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156975 (or 156966 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The square root of 2056554864 is about 45349.2542827332. The cubic root of 2056554864 is about 1271.6866143834.

The spelling of 2056554864 in words is "two billion, fifty-six million, five hundred fifty-four thousand, eight hundred sixty-four".