1057369217 has 8 divisors (see below), whose sum is σ = 1071049320. Its totient is φ = 1043729280.

The previous prime is 1057369207. The next prime is 1057369219. The reversal of 1057369217 is 7129637501.

It can be written as a sum of positive squares in 4 ways, for example, as 78961 + 1057290256 = 281^2 + 32516^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1057369217 - 2¹² = 1057365121 is a prime.

It is a super-2 number, since 2×1057369217² = 2236059322118386178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057369219) 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 in 7 ways as a sum of consecutive naturals, for example, 44867 + ... + 64247.

It is an arithmetic number, because the mean of its divisors is an integer number (133881165).

Almost surely, 2^1057369217 is an apocalyptic number.

It is an amenable number.

1057369217 is a deficient number, since it is larger than the sum of its proper divisors (13680103).

1057369217 is an equidigital number, since it uses as much as digits as its factorization.

1057369217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20083.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 1057369217 is about 32517.2141641931. The cubic root of 1057369217 is about 1018.7686078777.

The spelling of 1057369217 in words is "one billion, fifty-seven million, three hundred sixty-nine thousand, two hundred seventeen".