556561143 has 12 divisors (see below), whose sum is σ = 809707080. Its totient is φ = 368370576.

The previous prime is 556561043. The next prime is 556561163. The reversal of 556561143 is 341165655.

556561143 is a `hidden beast` number, since 5 + 56 + 561 + 1 + 43 = 666.

It is not a de Polignac number, because 556561143 - 2¹² = 556557047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556561098 and 556561107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556561163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221196 + ... + 223697.

It is an arithmetic number, because the mean of its divisors is an integer number (67475590).

Almost surely, 2^556561143 is an apocalyptic number.

556561143 is a deficient number, since it is larger than the sum of its proper divisors (253145937).

556561143 is a wasteful number, since it uses less digits than its factorization.

556561143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445038 (or 445035 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 556561143 is about 23591.5481263948. The cubic root of 556561143 is about 822.5663908617.

The spelling of 556561143 in words is "five hundred fifty-six million, five hundred sixty-one thousand, one hundred forty-three".