2564421453 has 24 divisors (see below), whose sum is σ = 4096272960. Its totient is φ = 1532900160.

The previous prime is 2564421437. The next prime is 2564421481. The reversal of 2564421453 is 3541244652.

2564421453 is a `hidden beast` number, since 2 + 5 + 644 + 2 + 1 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 2564421453 - 2⁴ = 2564421437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564425453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170193 + ... + 184646.

It is an arithmetic number, because the mean of its divisors is an integer number (170678040).

Almost surely, 2^2564421453 is an apocalyptic number.

It is an amenable number.

2564421453 is a deficient number, since it is larger than the sum of its proper divisors (1531851507).

2564421453 is a wasteful number, since it uses less digits than its factorization.

2564421453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354929 (or 354926 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2564421453 is about 50640.1170318553. The cubic root of 2564421453 is about 1368.7678646070.

The spelling of 2564421453 in words is "two billion, five hundred sixty-four million, four hundred twenty-one thousand, four hundred fifty-three".