5551405988 has 12 divisors (see below), whose sum is σ = 9723112140. Its totient is φ = 2773373952.

The previous prime is 5551405973. The next prime is 5551405999. The reversal of 5551405988 is 8895041555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3653235364 + 1898170624 = 60442^2 + 43568^2 .

It is a super-2 number, since 2×5551405988² = 61636216887204512288, which contains 22 as substring.

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, 576893 + ... + 586436.

It is an arithmetic number, because the mean of its divisors is an integer number (810259345).

Almost surely, 2^5551405988 is an apocalyptic number.

It is an amenable number.

5551405988 is a deficient number, since it is larger than the sum of its proper divisors (4171706152).

5551405988 is a wasteful number, since it uses less digits than its factorization.

5551405988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164526 (or 1164524 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 50.

The square root of 5551405988 is about 74507.7579047981. The cubic root of 5551405988 is about 1770.6565481197.

The spelling of 5551405988 in words is "five billion, five hundred fifty-one million, four hundred five thousand, nine hundred eighty-eight".