5221561536 has 56 divisors (see below), whose sum is σ = 15350429040. Its totient is φ = 1740519936.

The previous prime is 5221561493. The next prime is 5221561547. The reversal of 5221561536 is 6351651225.

5221561536 is a `hidden beast` number, since 5 + 2 + 2 + 1 + 5 + 615 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5221561536.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509141 + ... + 1512596.

Almost surely, 2^5221561536 is an apocalyptic number.

It is an amenable number.

5221561536 is an abundant number, since it is smaller than the sum of its proper divisors (10128867504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5221561536 is a wasteful number, since it uses less digits than its factorization.

5221561536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021758 (or 3021742 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 5221561536 is about 72260.3732068967. The cubic root of 5221561536 is about 1734.8694529806.

The spelling of 5221561536 in words is "five billion, two hundred twenty-one million, five hundred sixty-one thousand, five hundred thirty-six".