556566061 has 2 divisors, whose sum is σ = 556566062. Its totient is φ = 556566060.

The previous prime is 556566053. The next prime is 556566083. The reversal of 556566061 is 160665655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475458025 + 81108036 = 21805^2 + 9006^2 .

It is a cyclic number.

It is not a de Polignac number, because 556566061 - 2³ = 556566053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556560061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278283030 + 278283031.

It is an arithmetic number, because the mean of its divisors is an integer number (278283031).

Almost surely, 2^556566061 is an apocalyptic number.

It is an amenable number.

556566061 is a deficient number, since it is larger than the sum of its proper divisors (1).

556566061 is an equidigital number, since it uses as much as digits as its factorization.

556566061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 556566061 is about 23591.6523584085. The cubic root of 556566061 is about 822.5688136980.

The spelling of 556566061 in words is "five hundred fifty-six million, five hundred sixty-six thousand, sixty-one".