564552631 has 4 divisors (see below), whose sum is σ = 565029432. Its totient is φ = 564075832.

The previous prime is 564552629. The next prime is 564552647. The reversal of 564552631 is 136255465.

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 564552631 - 2¹ = 564552629 is a prime.

It is a super-2 number, since 2×564552631² = 637439346338044322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564552601) 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, 236620 + ... + 238993.

It is an arithmetic number, because the mean of its divisors is an integer number (141257358).

Almost surely, 2^564552631 is an apocalyptic number.

564552631 is a deficient number, since it is larger than the sum of its proper divisors (476801).

564552631 is a wasteful number, since it uses less digits than its factorization.

564552631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476800.

The product of its digits is 108000, while the sum is 37.

The square root of 564552631 is about 23760.3163068171. The cubic root of 564552631 is about 826.4846878920.

The spelling of 564552631 in words is "five hundred sixty-four million, five hundred fifty-two thousand, six hundred thirty-one".