5056556521 has 2 divisors, whose sum is σ = 5056556522. Its totient is φ = 5056556520.

The previous prime is 5056556471. The next prime is 5056556539. The reversal of 5056556521 is 1256556505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3176900496 + 1879656025 = 56364^2 + 43355^2 .

It is a cyclic number.

It is not a de Polignac number, because 5056556521 - 2¹⁷ = 5056425449 is a prime.

It is not a weakly prime, because it can be changed into another prime (5056553521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528278260 + 2528278261.

It is an arithmetic number, because the mean of its divisors is an integer number (2528278261).

Almost surely, 2^5056556521 is an apocalyptic number.

It is an amenable number.

5056556521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5056556521 is an equidigital number, since it uses as much as digits as its factorization.

5056556521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225000, while the sum is 40.

The square root of 5056556521 is about 71109.4685748670. The cubic root of 5056556521 is about 1716.3991416754.

The spelling of 5056556521 in words is "five billion, fifty-six million, five hundred fifty-six thousand, five hundred twenty-one".