517744045 has 24 divisors (see below), whose sum is σ = 778327704. Its totient is φ = 327712896.

The previous prime is 517744043. The next prime is 517744049. The reversal of 517744045 is 540447715.

It can be written as a sum of positive squares in 4 ways, for example, as 32467204 + 485276841 = 5698^2 + 22029^2 .

It is not a de Polignac number, because 517744045 - 2¹ = 517744043 is a prime.

It is a super-2 number, since 2×517744045² = 536117792265924050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 517743995 and 517744013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517744043) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 78094 + ... + 84463.

It is an arithmetic number, because the mean of its divisors is an integer number (32430321).

Almost surely, 2^517744045 is an apocalyptic number.

It is an amenable number.

517744045 is a deficient number, since it is larger than the sum of its proper divisors (260583659).

517744045 is a wasteful number, since it uses less digits than its factorization.

517744045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162589 (or 162582 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 517744045 is about 22753.9896501690. The cubic root of 517744045 is about 802.9805715546.

The spelling of 517744045 in words is "five hundred seventeen million, seven hundred forty-four thousand, forty-five".