517426009 has 15 divisors (see below), whose sum is σ = 553817973. Its totient is φ = 483419244.

The previous prime is 517426003. The next prime is 517426043. The reversal of 517426009 is 900624715.

The square root of 517426009 is 22747.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 517426009 - 2³ = 517426001 is a prime.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517426001) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12033142 + ... + 12033184.

Almost surely, 2^517426009 is an apocalyptic number.

517426009 is the 22747-th square number.

517426009 is the 11374-th centered octagonal number.

It is an amenable number.

517426009 is a deficient number, since it is larger than the sum of its proper divisors (36391964).

517426009 is an frugal number, since it uses more digits than its factorization.

517426009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The cubic root of 517426009 is about 802.8161215465.

The spelling of 517426009 in words is "five hundred seventeen million, four hundred twenty-six thousand, nine".