556355644 has 24 divisors (see below), whose sum is σ = 1103703440. Its totient is φ = 243264384.

The previous prime is 556355641. The next prime is 556355647. The reversal of 556355644 is 446553655.

It is an interprime number because it is at equal distance from previous prime (556355641) and next prime (556355647).

It is a super-2 number, since 2×556355644² = 619063205221309472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 556355644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556355641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280569 + ... + 282544.

Almost surely, 2^556355644 is an apocalyptic number.

It is an amenable number.

556355644 is a deficient number, since it is larger than the sum of its proper divisors (547347796).

556355644 is a wasteful number, since it uses less digits than its factorization.

556355644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563149 (or 563147 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 43.

The square root of 556355644 is about 23587.1923721328. The cubic root of 556355644 is about 822.4651397044.

The spelling of 556355644 in words is "five hundred fifty-six million, three hundred fifty-five thousand, six hundred forty-four".