513299905 has 16 divisors (see below), whose sum is σ = 621408384. Its totient is φ = 407024640.

The previous prime is 513299903. The next prime is 513299909. The reversal of 513299905 is 509992315.

It is not a de Polignac number, because 513299905 - 2¹ = 513299903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513299903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318612 + ... + 320218.

It is an arithmetic number, because the mean of its divisors is an integer number (38838024).

Almost surely, 2^513299905 is an apocalyptic number.

It is an amenable number.

513299905 is a deficient number, since it is larger than the sum of its proper divisors (108108479).

513299905 is a wasteful number, since it uses less digits than its factorization.

513299905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 513299905 is about 22656.1229030918. The cubic root of 513299905 is about 800.6764616924.

The spelling of 513299905 in words is "five hundred thirteen million, two hundred ninety-nine thousand, nine hundred five".