52564402561 has 8 divisors (see below), whose sum is σ = 59836158144. Its totient is φ = 45708175920.

The previous prime is 52564402549. The next prime is 52564402567. The reversal of 52564402561 is 16520446525.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52564402561 - 2⁷ = 52564402433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52564402567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103881966 + ... + 103882471.

It is an arithmetic number, because the mean of its divisors is an integer number (7479519768).

Almost surely, 2^52564402561 is an apocalyptic number.

It is an amenable number.

52564402561 is a deficient number, since it is larger than the sum of its proper divisors (7271755583).

52564402561 is a wasteful number, since it uses less digits than its factorization.

52564402561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207764471.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 52564402561 in words is "fifty-two billion, five hundred sixty-four million, four hundred two thousand, five hundred sixty-one".