5126556217 has 2 divisors, whose sum is σ = 5126556218. Its totient is φ = 5126556216.

The previous prime is 5126556179. The next prime is 5126556223. The reversal of 5126556217 is 7126556215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5120261136 + 6295081 = 71556^2 + 2509^2 .

It is a cyclic number.

It is not a de Polignac number, because 5126556217 - 2²³ = 5118167609 is a prime.

It is a super-2 number, since 2×5126556217² = 52563157292122702178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5126556217.

It is not a weakly prime, because it can be changed into another prime (5126556257) 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, 2563278108 + 2563278109.

It is an arithmetic number, because the mean of its divisors is an integer number (2563278109).

Almost surely, 2^5126556217 is an apocalyptic number.

It is an amenable number.

5126556217 is a deficient number, since it is larger than the sum of its proper divisors (1).

5126556217 is an equidigital number, since it uses as much as digits as its factorization.

5126556217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 40.

The square root of 5126556217 is about 71599.9735823974. The cubic root of 5126556217 is about 1724.2831122639.

The spelling of 5126556217 in words is "five billion, one hundred twenty-six million, five hundred fifty-six thousand, two hundred seventeen".