556790551 has 2 divisors, whose sum is σ = 556790552. Its totient is φ = 556790550.

The previous prime is 556790543. The next prime is 556790561. The reversal of 556790551 is 155097655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556790551 - 2³ = 556790543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556790498 and 556790507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556790561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278395275 + 278395276.

It is an arithmetic number, because the mean of its divisors is an integer number (278395276).

Almost surely, 2^556790551 is an apocalyptic number.

556790551 is a deficient number, since it is larger than the sum of its proper divisors (1).

556790551 is an equidigital number, since it uses as much as digits as its factorization.

556790551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236250, while the sum is 43.

The square root of 556790551 is about 23596.4097057158. The cubic root of 556790551 is about 822.6793927554.

The spelling of 556790551 in words is "five hundred fifty-six million, seven hundred ninety thousand, five hundred fifty-one".