556540244 has 24 divisors (see below), whose sum is σ = 1049518848. Its totient is φ = 256704480.

The previous prime is 556540219. The next prime is 556540249. The reversal of 556540244 is 442045655.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556540249) 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, 136889 + ... + 140895.

It is an arithmetic number, because the mean of its divisors is an integer number (43729952).

Almost surely, 2^556540244 is an apocalyptic number.

It is an amenable number.

556540244 is a deficient number, since it is larger than the sum of its proper divisors (492978604).

556540244 is a wasteful number, since it uses less digits than its factorization.

556540244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 6693 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 556540244 is about 23591.1051881848. The cubic root of 556540244 is about 822.5560948799.

Adding to 556540244 its reverse (442045655), we get a palindrome (998585899).

The spelling of 556540244 in words is "five hundred fifty-six million, five hundred forty thousand, two hundred forty-four".