513392891 has 32 divisors (see below), whose sum is σ = 598081536. Its totient is φ = 436356000.

The previous prime is 513392881. The next prime is 513392909. The reversal of 513392891 is 198293315.

It is not a de Polignac number, because 513392891 - 2⁶ = 513392827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513392861) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1650626 + ... + 1650936.

It is an arithmetic number, because the mean of its divisors is an integer number (18690048).

Almost surely, 2^513392891 is an apocalyptic number.

513392891 is a deficient number, since it is larger than the sum of its proper divisors (84688645).

513392891 is a wasteful number, since it uses less digits than its factorization.

513392891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 58320, while the sum is 41.

The square root of 513392891 is about 22658.1749265028. The cubic root of 513392891 is about 800.7248071824.

The spelling of 513392891 in words is "five hundred thirteen million, three hundred ninety-two thousand, eight hundred ninety-one".