513163505 has 16 divisors (see below), whose sum is σ = 639010944. Its totient is φ = 395324160.

The previous prime is 513163493. The next prime is 513163507. The reversal of 513163505 is 505361315.

It is not a de Polignac number, because 513163505 - 2²⁶ = 446054641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513163507) 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, 1544 + ... + 32073.

It is an arithmetic number, because the mean of its divisors is an integer number (39938184).

Almost surely, 2^513163505 is an apocalyptic number.

It is an amenable number.

513163505 is a deficient number, since it is larger than the sum of its proper divisors (125847439).

513163505 is a wasteful number, since it uses less digits than its factorization.

513163505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33736.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 513163505 is about 22653.1124793040. The cubic root of 513163505 is about 800.6055337330.

The spelling of 513163505 in words is "five hundred thirteen million, one hundred sixty-three thousand, five hundred five".