517898089 has 4 divisors (see below), whose sum is σ = 519961680. Its totient is φ = 515834500.

The previous prime is 517898057. The next prime is 517898137. The reversal of 517898089 is 980898715.

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 517898089 - 2⁵ = 517898057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517898039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031419 + ... + 1031920.

It is an arithmetic number, because the mean of its divisors is an integer number (129990420).

Almost surely, 2^517898089 is an apocalyptic number.

It is an amenable number.

517898089 is a deficient number, since it is larger than the sum of its proper divisors (2063591).

517898089 is a wasteful number, since it uses less digits than its factorization.

517898089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063590.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 517898089 is about 22757.3743872179. The cubic root of 517898089 is about 803.0602003949.

The spelling of 517898089 in words is "five hundred seventeen million, eight hundred ninety-eight thousand, eighty-nine".