513023505 has 8 divisors (see below), whose sum is σ = 820837632. Its totient is φ = 273612528.

The previous prime is 513023473. The next prime is 513023507. The reversal of 513023505 is 505320315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513023505 - 2⁵ = 513023473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513023507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17100769 + ... + 17100798.

It is an arithmetic number, because the mean of its divisors is an integer number (102604704).

Almost surely, 2^513023505 is an apocalyptic number.

It is an amenable number.

513023505 is a deficient number, since it is larger than the sum of its proper divisors (307814127).

513023505 is a wasteful number, since it uses less digits than its factorization.

513023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34201575.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 513023505 is about 22650.0221854196. The cubic root of 513023505 is about 800.5327207029.

The spelling of 513023505 in words is "five hundred thirteen million, twenty-three thousand, five hundred five".