556550051 has 2 divisors, whose sum is σ = 556550052. Its totient is φ = 556550050.

The previous prime is 556550017. The next prime is 556550053. The reversal of 556550051 is 150055655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556550051 - 2¹⁴ = 556533667 is a prime.

Together with 556550053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556550053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278275025 + 278275026.

It is an arithmetic number, because the mean of its divisors is an integer number (278275026).

Almost surely, 2^556550051 is an apocalyptic number.

556550051 is a deficient number, since it is larger than the sum of its proper divisors (1).

556550051 is an equidigital number, since it uses as much as digits as its factorization.

556550051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 556550051 is about 23591.3130410327. The cubic root of 556550051 is about 822.5609263725.

The spelling of 556550051 in words is "five hundred fifty-six million, five hundred fifty thousand, fifty-one".