5215523556 has 12 divisors (see below), whose sum is σ = 12169554992. Its totient is φ = 1738507848.

The previous prime is 5215523543. The next prime is 5215523563. The reversal of 5215523556 is 6553255125.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217313470 + ... + 217313493.

Almost surely, 2^5215523556 is an apocalyptic number.

It is an amenable number.

5215523556 is an abundant number, since it is smaller than the sum of its proper divisors (6954031436).

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

5215523556 is a wasteful number, since it uses less digits than its factorization.

5215523556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434626970 (or 434626968 counting only the distinct ones).

The product of its digits is 225000, while the sum is 39.

The square root of 5215523556 is about 72218.5817916691. The cubic root of 5215523556 is about 1734.2004866040.

The spelling of 5215523556 in words is "five billion, two hundred fifteen million, five hundred twenty-three thousand, five hundred fifty-six".