517385189 has 4 divisors (see below), whose sum is σ = 525107424. Its totient is φ = 509662956.

The previous prime is 517385137. The next prime is 517385203. The reversal of 517385189 is 981583715.

It is a happy number.

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 517385189 - 2¹² = 517381093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517385119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3861017 + ... + 3861150.

It is an arithmetic number, because the mean of its divisors is an integer number (131276856).

Almost surely, 2^517385189 is an apocalyptic number.

It is an amenable number.

517385189 is a deficient number, since it is larger than the sum of its proper divisors (7722235).

517385189 is an equidigital number, since it uses as much as digits as its factorization.

517385189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7722234.

The product of its digits is 302400, while the sum is 47.

The square root of 517385189 is about 22746.1027211257. The cubic root of 517385189 is about 802.7950094678.

The spelling of 517385189 in words is "five hundred seventeen million, three hundred eighty-five thousand, one hundred eighty-nine".