52564309 has 24 divisors (see below), whose sum is σ = 63767040. Its totient is φ = 43164576.

The previous prime is 52564301. The next prime is 52564321. The reversal of 52564309 is 90346525.

It is not a de Polignac number, because 52564309 - 2³ = 52564301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52564301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143044 + ... + 143410.

It is an arithmetic number, because the mean of its divisors is an integer number (2656960).

Almost surely, 2^52564309 is an apocalyptic number.

It is an amenable number.

52564309 is a deficient number, since it is larger than the sum of its proper divisors (11202731).

52564309 is a wasteful number, since it uses less digits than its factorization.

52564309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 52564309 is about 7250.1247575473. The cubic root of 52564309 is about 374.5964464672.

The spelling of 52564309 in words is "fifty-two million, five hundred sixty-four thousand, three hundred nine".