515530045 has 8 divisors (see below), whose sum is σ = 618814296. Its totient is φ = 412305216.

The previous prime is 515530039. The next prime is 515530051. The reversal of 515530045 is 540035515.

It is an interprime number because it is at equal distance from previous prime (515530039) and next prime (515530051).

It can be written as a sum of positive squares in 4 ways, for example, as 229886244 + 285643801 = 15162^2 + 16901^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 515530045 - 2²¹ = 513432893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515529995 and 515530022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7219 + ... + 32911.

It is an arithmetic number, because the mean of its divisors is an integer number (77351787).

Almost surely, 2^515530045 is an apocalyptic number.

It is an amenable number.

515530045 is a deficient number, since it is larger than the sum of its proper divisors (103284251).

515530045 is a wasteful number, since it uses less digits than its factorization.

515530045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29711.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 515530045 is about 22705.2867191762. The cubic root of 515530045 is about 801.8343558128.

The spelling of 515530045 in words is "five hundred fifteen million, five hundred thirty thousand, forty-five".