5518811572 has 24 divisors (see below), whose sum is σ = 9695931840. Its totient is φ = 2748567360.

The previous prime is 5518811539. The next prime is 5518811579. The reversal of 5518811572 is 2751188155.

It is a super-2 number, since 2×5518811572² = 60914562334482222368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518811579) 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, 1273273 + ... + 1277599.

It is an arithmetic number, because the mean of its divisors is an integer number (403997160).

Almost surely, 2^5518811572 is an apocalyptic number.

It is an amenable number.

5518811572 is a deficient number, since it is larger than the sum of its proper divisors (4177120268).

5518811572 is a wasteful number, since it uses less digits than its factorization.

5518811572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511 (or 5509 counting only the distinct ones).

The product of its digits is 112000, while the sum is 43.

The square root of 5518811572 is about 74288.7042019175. The cubic root of 5518811572 is about 1767.1843443331.

The spelling of 5518811572 in words is "five billion, five hundred eighteen million, eight hundred eleven thousand, five hundred seventy-two".