515545345 has 64 divisors (see below), whose sum is σ = 774733824. Its totient is φ = 321615360.

The previous prime is 515545339. The next prime is 515545399. The reversal of 515545345 is 543545515.

It is a happy number.

It is not a de Polignac number, because 515545345 - 2³ = 515545337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1821574 + ... + 1821856.

It is an arithmetic number, because the mean of its divisors is an integer number (12105216).

Almost surely, 2^515545345 is an apocalyptic number.

It is an amenable number.

515545345 is a deficient number, since it is larger than the sum of its proper divisors (259188479).

515545345 is a wasteful number, since it uses less digits than its factorization.

515545345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its digits is 150000, while the sum is 37.

The square root of 515545345 is about 22705.6236426133. The cubic root of 515545345 is about 801.8422880659.

The spelling of 515545345 in words is "five hundred fifteen million, five hundred forty-five thousand, three hundred forty-five".