556660051 has 2 divisors, whose sum is σ = 556660052. Its totient is φ = 556660050.

The previous prime is 556660021. The next prime is 556660061. The reversal of 556660051 is 150066655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556660051 - 2¹⁵ = 556627283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556659989 and 556660016.

It is not a weakly prime, because it can be changed into another prime (556660021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278330025 + 278330026.

It is an arithmetic number, because the mean of its divisors is an integer number (278330026).

Almost surely, 2^556660051 is an apocalyptic number.

556660051 is a deficient number, since it is larger than the sum of its proper divisors (1).

556660051 is an equidigital number, since it uses as much as digits as its factorization.

556660051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 556660051 is about 23593.6442924784. The cubic root of 556660051 is about 822.6151148151.

The spelling of 556660051 in words is "five hundred fifty-six million, six hundred sixty thousand, fifty-one".