5551455660 has 96 divisors (see below), whose sum is σ = 15978547200. Its totient is φ = 1439327232.

The previous prime is 5551455659. The next prime is 5551455673. The reversal of 5551455660 is 665541555.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 570516 + ... + 580164.

It is an arithmetic number, because the mean of its divisors is an integer number (166443200).

Almost surely, 2^5551455660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5551455660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7989273600).

5551455660 is an abundant number, since it is smaller than the sum of its proper divisors (10427091540).

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

5551455660 is a wasteful number, since it uses less digits than its factorization.

5551455660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9927 (or 9925 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The square root of 5551455660 is about 74508.0912384689. The cubic root of 5551455660 is about 1770.6618291716.

The spelling of 5551455660 in words is "five billion, five hundred fifty-one million, four hundred fifty-five thousand, six hundred sixty".