556545798 has 12 divisors (see below), whose sum is σ = 1205849268. Its totient is φ = 185515260.

The previous prime is 556545797. The next prime is 556545809. The reversal of 556545798 is 897545655.

556545798 is a `hidden beast` number, since 5 + 5 + 6 + 545 + 7 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556545797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15459588 + ... + 15459623.

It is an arithmetic number, because the mean of its divisors is an integer number (100487439).

Almost surely, 2^556545798 is an apocalyptic number.

556545798 is an abundant number, since it is smaller than the sum of its proper divisors (649303470).

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

556545798 is a wasteful number, since it uses less digits than its factorization.

556545798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30919219 (or 30919216 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 54.

The square root of 556545798 is about 23591.2229017489. Note that the first 3 decimals coincide. The cubic root of 556545798 is about 822.5588311069.

The spelling of 556545798 in words is "five hundred fifty-six million, five hundred forty-five thousand, seven hundred ninety-eight".