2564353857 has 32 divisors (see below), whose sum is σ = 3790257408. Its totient is φ = 1531927296.

The previous prime is 2564353853. The next prime is 2564353907. The reversal of 2564353857 is 7583534652.

It is a happy number.

2564353857 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2564353857 - 2² = 2564353853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564353853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724063 + ... + 727595.

It is an arithmetic number, because the mean of its divisors is an integer number (118445544).

Almost surely, 2^2564353857 is an apocalyptic number.

It is an amenable number.

2564353857 is a deficient number, since it is larger than the sum of its proper divisors (1225903551).

2564353857 is a wasteful number, since it uses less digits than its factorization.

2564353857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089.

The product of its digits is 3024000, while the sum is 48.

The square root of 2564353857 is about 50639.4496119379. The cubic root of 2564353857 is about 1368.7558379768.

The spelling of 2564353857 in words is "two billion, five hundred sixty-four million, three hundred fifty-three thousand, eight hundred fifty-seven".