512440345 has 32 divisors (see below), whose sum is σ = 661457664. Its totient is φ = 380160000.

The previous prime is 512440339. The next prime is 512440349. The reversal of 512440345 is 543044215.

It is not a de Polignac number, because 512440345 - 2³ = 512440337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512440349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1183249 + ... + 1183681.

It is an arithmetic number, because the mean of its divisors is an integer number (20670552).

Almost surely, 2^512440345 is an apocalyptic number.

It is an amenable number.

512440345 is a deficient number, since it is larger than the sum of its proper divisors (149017319).

512440345 is a wasteful number, since it uses less digits than its factorization.

512440345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 512440345 is about 22637.1452484628. The cubic root of 512440345 is about 800.2292806359.

The spelling of 512440345 in words is "five hundred twelve million, four hundred forty thousand, three hundred forty-five".