556551016 has 48 divisors (see below), whose sum is σ = 1216425600. Its totient is φ = 238027104.

The previous prime is 556550999. The next prime is 556551019. The reversal of 556551016 is 610155655.

It is not an unprimeable number, because it can be changed into a prime (556551019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236775 + ... + 239113.

It is an arithmetic number, because the mean of its divisors is an integer number (25342200).

Almost surely, 2^556551016 is an apocalyptic number.

556551016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556551016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608212800).

556551016 is an abundant number, since it is smaller than the sum of its proper divisors (659874584).

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

556551016 is a wasteful number, since it uses less digits than its factorization.

556551016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 2955 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 556551016 is about 23591.3334934675. Note that the first 3 decimals coincide. The cubic root of 556551016 is about 822.5614017840.

The spelling of 556551016 in words is "five hundred fifty-six million, five hundred fifty-one thousand, sixteen".