513815045 has 16 divisors (see below), whose sum is σ = 631611648. Its totient is φ = 401083200.

The previous prime is 513815039. The next prime is 513815053. The reversal of 513815045 is 540518315.

It is not a de Polignac number, because 513815045 - 2⁶ = 513814981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78395 + ... + 84695.

It is an arithmetic number, because the mean of its divisors is an integer number (39475728).

Almost surely, 2^513815045 is an apocalyptic number.

It is an amenable number.

513815045 is a deficient number, since it is larger than the sum of its proper divisors (117796603).

513815045 is a wasteful number, since it uses less digits than its factorization.

513815045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 513815045 is about 22667.4887228383. The cubic root of 513815045 is about 800.9442210573.

The spelling of 513815045 in words is "five hundred thirteen million, eight hundred fifteen thousand, forty-five".