1056258209 has 2 divisors, whose sum is σ = 1056258210. Its totient is φ = 1056258208.

The previous prime is 1056258199. The next prime is 1056258221. The reversal of 1056258209 is 9028526501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045552225 + 10705984 = 32335^2 + 3272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056258209 - 2⁸ = 1056257953 is a prime.

It is a super-2 number, since 2×1056258209² = 2231362808159775362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056258239) 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, 528129104 + 528129105.

It is an arithmetic number, because the mean of its divisors is an integer number (528129105).

Almost surely, 2^1056258209 is an apocalyptic number.

It is an amenable number.

1056258209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056258209 is an equidigital number, since it uses as much as digits as its factorization.

1056258209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 1056258209 is about 32500.1262920623. The cubic root of 1056258209 is about 1018.4116664194.

The spelling of 1056258209 in words is "one billion, fifty-six million, two hundred fifty-eight thousand, two hundred nine".