555501056 has 80 divisors (see below), whose sum is σ = 1234327248. Its totient is φ = 247603200.

The previous prime is 555501053. The next prime is 555501073. The reversal of 555501056 is 650105555.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555501053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297566 + ... + 299426.

Almost surely, 2^555501056 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 555501056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617163624).

555501056 is an abundant number, since it is smaller than the sum of its proper divisors (678826192).

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

555501056 is a wasteful number, since it uses less digits than its factorization.

555501056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 555501056 is about 23569.0699010377. The cubic root of 555501056 is about 822.0438090720.

The spelling of 555501056 in words is "five hundred fifty-five million, five hundred one thousand, fifty-six".