2564652551 has 4 divisors (see below), whose sum is σ = 2564902704. Its totient is φ = 2564402400.

The previous prime is 2564652539. The next prime is 2564652553. The reversal of 2564652551 is 1552564652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2564652551 - 2²⁶ = 2497543687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2564652499 and 2564652508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564652553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109010 + ... + 130431.

It is an arithmetic number, because the mean of its divisors is an integer number (641225676).

Almost surely, 2^2564652551 is an apocalyptic number.

2564652551 is a deficient number, since it is larger than the sum of its proper divisors (250153).

2564652551 is a wasteful number, since it uses less digits than its factorization.

2564652551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250152.

The product of its digits is 360000, while the sum is 41.

The square root of 2564652551 is about 50642.3987484795. The cubic root of 2564652551 is about 1368.8089797955.

The spelling of 2564652551 in words is "two billion, five hundred sixty-four million, six hundred fifty-two thousand, five hundred fifty-one".