556454988 has 96 divisors (see below), whose sum is σ = 1494366720. Its totient is φ = 178925760.

The previous prime is 556454981. The next prime is 556454989. The reversal of 556454988 is 889454655.

556454988 is a `hidden beast` number, since 556 + 4 + 5 + 4 + 9 + 88 = 666.

556454988 is nontrivially palindromic in base 8.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (556454981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522945 + ... + 524007.

It is an arithmetic number, because the mean of its divisors is an integer number (15566320).

Almost surely, 2^556454988 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 556454988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747183360).

556454988 is an abundant number, since it is smaller than the sum of its proper divisors (937911732).

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

556454988 is a wasteful number, since it uses less digits than its factorization.

556454988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1236 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 54.

The square root of 556454988 is about 23589.2981667535. The cubic root of 556454988 is about 822.5140904759.

The spelling of 556454988 in words is "five hundred fifty-six million, four hundred fifty-four thousand, nine hundred eighty-eight".