1717091057 has 4 divisors (see below), whose sum is σ = 1873190256. Its totient is φ = 1560991860.

The previous prime is 1717091053. The next prime is 1717091083. The reversal of 1717091057 is 7501907171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1717091057 - 2² = 1717091053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1717091057.

It is not an unprimeable number, because it can be changed into a prime (1717091053) 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 in 3 ways as a sum of consecutive naturals, for example, 78049583 + ... + 78049604.

It is an arithmetic number, because the mean of its divisors is an integer number (468297564).

Almost surely, 2^1717091057 is an apocalyptic number.

It is an amenable number.

1717091057 is a deficient number, since it is larger than the sum of its proper divisors (156099199).

1717091057 is a wasteful number, since it uses less digits than its factorization.

1717091057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156099198.

The product of its (nonzero) digits is 15435, while the sum is 38.

The square root of 1717091057 is about 41437.7974438797. The cubic root of 1717091057 is about 1197.4694490574.

The spelling of 1717091057 in words is "one billion, seven hundred seventeen million, ninety-one thousand, fifty-seven".