517945372 has 48 divisors (see below), whose sum is σ = 1091768832. Its totient is φ = 210196800.

The previous prime is 517945369. The next prime is 517945387. The reversal of 517945372 is 273549715.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61063 + ... + 69025.

It is an arithmetic number, because the mean of its divisors is an integer number (22745184).

Almost surely, 2^517945372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 517945372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545884416).

517945372 is an abundant number, since it is smaller than the sum of its proper divisors (573823460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517945372 is a wasteful number, since it uses less digits than its factorization.

517945372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098 (or 8096 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The square root of 517945372 is about 22758.4132135788. The cubic root of 517945372 is about 803.0846388837.

The spelling of 517945372 in words is "five hundred seventeen million, nine hundred forty-five thousand, three hundred seventy-two".