513381392 has 20 divisors (see below), whose sum is σ = 995224620. Its totient is φ = 256549248.

The previous prime is 513381383. The next prime is 513381431. The reversal of 513381392 is 293183315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 435306496 + 78074896 = 20864^2 + 8836^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25034 + ... + 40662.

It is an arithmetic number, because the mean of its divisors is an integer number (49761231).

Almost surely, 2^513381392 is an apocalyptic number.

It is an amenable number.

513381392 is a deficient number, since it is larger than the sum of its proper divisors (481843228).

513381392 is a wasteful number, since it uses less digits than its factorization.

513381392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17690 (or 17684 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 513381392 is about 22657.9211756066. The cubic root of 513381392 is about 800.7188289128.

The spelling of 513381392 in words is "five hundred thirteen million, three hundred eighty-one thousand, three hundred ninety-two".