52565559637 has 4 divisors (see below), whose sum is σ = 53986250476. Its totient is φ = 51144868800.

The previous prime is 52565559623. The next prime is 52565559647. The reversal of 52565559637 is 73695556525.

52565559637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46258976241 + 6306583396 = 215079^2 + 79414^2 .

It is a cyclic number.

It is not a de Polignac number, because 52565559637 - 2¹⁵ = 52565526869 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 (52565559647) 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, 710345364 + ... + 710345437.

It is an arithmetic number, because the mean of its divisors is an integer number (13496562619).

Almost surely, 2^52565559637 is an apocalyptic number.

It is an amenable number.

52565559637 is a deficient number, since it is larger than the sum of its proper divisors (1420690839).

52565559637 is a wasteful number, since it uses less digits than its factorization.

52565559637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420690838.

The product of its digits is 42525000, while the sum is 58.

The spelling of 52565559637 in words is "fifty-two billion, five hundred sixty-five million, five hundred fifty-nine thousand, six hundred thirty-seven".