2217039257 has 2 divisors, whose sum is σ = 2217039258. Its totient is φ = 2217039256.

The previous prime is 2217039247. The next prime is 2217039269. The reversal of 2217039257 is 7529307122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1569031321 + 648007936 = 39611^2 + 25456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2217039257 - 2¹⁰ = 2217038233 is a prime.

It is a super-2 number, since 2×2217039257² = 9830526134158224098, 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 2217039257.

It is not a weakly prime, because it can be changed into another prime (2217039247) 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, 1108519628 + 1108519629.

It is an arithmetic number, because the mean of its divisors is an integer number (1108519629).

Almost surely, 2^2217039257 is an apocalyptic number.

It is an amenable number.

2217039257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217039257 is an equidigital number, since it uses as much as digits as its factorization.

2217039257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2217039257 is about 47085.4463396069. The cubic root of 2217039257 is about 1303.9405594824.

The spelling of 2217039257 in words is "two billion, two hundred seventeen million, thirty-nine thousand, two hundred fifty-seven".