15531020552 has 32 divisors (see below), whose sum is σ = 29229768000. Its totient is φ = 7736474304.

The previous prime is 15531020551. The next prime is 15531020567. The reversal of 15531020552 is 25502013551.

It is not an unprimeable number, because it can be changed into a prime (15531020551) 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, 2503118 + ... + 2509314.

It is an arithmetic number, because the mean of its divisors is an integer number (913430250).

Almost surely, 2^15531020552 is an apocalyptic number.

It is an amenable number.

15531020552 is a deficient number, since it is larger than the sum of its proper divisors (13698747448).

15531020552 is a wasteful number, since it uses less digits than its factorization.

15531020552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325 (or 7321 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 15531020552 in words is "fifteen billion, five hundred thirty-one million, twenty thousand, five hundred fifty-two".