515520045 has 40 divisors (see below), whose sum is σ = 964313856. Its totient is φ = 262985184.

The previous prime is 515520023. The next prime is 515520067. The reversal of 515520045 is 540025515.

It is an interprime number because it is at equal distance from previous prime (515520023) and next prime (515520067).

It is not a de Polignac number, because 515520045 - 2⁵ = 515520013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 18357 + ... + 36986.

Almost surely, 2^515520045 is an apocalyptic number.

It is an amenable number.

515520045 is a deficient number, since it is larger than the sum of its proper divisors (448793811).

515520045 is a wasteful number, since it uses less digits than its factorization.

515520045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55383 (or 55374 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 515520045 is about 22705.0665050777. The cubic root of 515520045 is about 801.8291712489.

It can be divided in two parts, 5155 and 20045, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 515520045 in words is "five hundred fifteen million, five hundred twenty thousand, forty-five".