556561250 has 40 divisors (see below), whose sum is σ = 1192268352. Its totient is φ = 190818000.

The previous prime is 556561237. The next prime is 556561277. The reversal of 556561250 is 52165655.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 556561250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23054 + ... + 40553.

Almost surely, 2^556561250 is an apocalyptic number.

556561250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

556561250 is an abundant number, since it is smaller than the sum of its proper divisors (635707102).

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

556561250 is an equidigital number, since it uses as much as digits as its factorization.

556561250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63636 (or 63621 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 556561250 is about 23591.5503941560. The cubic root of 556561250 is about 822.5664435750.

The spelling of 556561250 in words is "five hundred fifty-six million, five hundred sixty-one thousand, two hundred fifty".