2557774564 has 12 divisors (see below), whose sum is σ = 4477580800. Its totient is φ = 1278465768.

The previous prime is 2557774523. The next prime is 2557774579. The reversal of 2557774564 is 4654777552.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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, 91524 + ... + 116155.

Almost surely, 2^2557774564 is an apocalyptic number.

It is an amenable number.

2557774564 is a deficient number, since it is larger than the sum of its proper divisors (1919806236).

2557774564 is a wasteful number, since it uses less digits than its factorization.

2557774564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210762 (or 210760 counting only the distinct ones).

The product of its digits is 8232000, while the sum is 52.

The square root of 2557774564 is about 50574.4457606804. The cubic root of 2557774564 is about 1367.5842422093.

The spelling of 2557774564 in words is "two billion, five hundred fifty-seven million, seven hundred seventy-four thousand, five hundred sixty-four".