5556021520 has 160 divisors (see below), whose sum is σ = 15375015936. Its totient is φ = 1827532800.

The previous prime is 5556021517. The next prime is 5556021533. The reversal of 5556021520 is 251206555.

It is a super-2 number, since 2×5556021520² = 61738750261406220800, which contains 22 as substring.

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, 1398577 + ... + 1402543.

Almost surely, 2^5556021520 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 5556021520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7687507968).

5556021520 is an abundant number, since it is smaller than the sum of its proper divisors (9818994416).

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

5556021520 is a wasteful number, since it uses less digits than its factorization.

5556021520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 5556021520 is about 74538.7249689717. The cubic root of 5556021520 is about 1771.1471300310.

The spelling of 5556021520 in words is "five billion, five hundred fifty-six million, twenty-one thousand, five hundred twenty".