515145445 has 16 divisors (see below), whose sum is σ = 643991040. Its totient is φ = 395150400.

The previous prime is 515145431. The next prime is 515145469. The reversal of 515145445 is 544541515.

It is not a de Polignac number, because 515145445 - 2²⁷ = 380927717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 515145445.

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 15 ways as a sum of consecutive naturals, for example, 1650 + ... + 32140.

It is an arithmetic number, because the mean of its divisors is an integer number (40249440).

Almost surely, 2^515145445 is an apocalyptic number.

It is an amenable number.

515145445 is a deficient number, since it is larger than the sum of its proper divisors (128845595).

515145445 is a wasteful number, since it uses less digits than its factorization.

515145445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30636.

The product of its digits is 40000, while the sum is 34.

The square root of 515145445 is about 22696.8157458265. The cubic root of 515145445 is about 801.6349091681.

The spelling of 515145445 in words is "five hundred fifteen million, one hundred forty-five thousand, four hundred forty-five".