555247872 has 90 divisors (see below), whose sum is σ = 1655710518. Its totient is φ = 185075712.

The previous prime is 555247843. The next prime is 555247873. The reversal of 555247872 is 278742555.

555247872 is a `hidden beast` number, since 55 + 524 + 7 + 8 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 383533056 + 171714816 = 19584^2 + 13104^2 .

It is not an unprimeable number, because it can be changed into a prime (555247873) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7348 + ... + 34124.

Almost surely, 2^555247872 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 555247872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827855259).

555247872 is an abundant number, since it is smaller than the sum of its proper divisors (1100462646).

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

555247872 is an equidigital number, since it uses as much as digits as its factorization.

555247872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26805 (or 26782 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 555247872 is about 23563.6981817371. The cubic root of 555247872 is about 821.9189008380.

The spelling of 555247872 in words is "five hundred fifty-five million, two hundred forty-seven thousand, eight hundred seventy-two".