512899945 has 16 divisors (see below), whose sum is σ = 674159760. Its totient is φ = 372865024.

The previous prime is 512899897. The next prime is 512899951. The reversal of 512899945 is 549998215.

It can be written as a sum of positive squares in 8 ways, for example, as 41011216 + 471888729 = 6404^2 + 21723^2 .

It is a cyclic number.

It is not a de Polignac number, because 512899945 - 2¹⁵ = 512867177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512899892 and 512899901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101572 + ... + 106501.

It is an arithmetic number, because the mean of its divisors is an integer number (42134985).

Almost surely, 2^512899945 is an apocalyptic number.

It is an amenable number.

512899945 is a deficient number, since it is larger than the sum of its proper divisors (161259815).

512899945 is a wasteful number, since it uses less digits than its factorization.

512899945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208124.

The product of its digits is 1166400, while the sum is 52.

The square root of 512899945 is about 22647.2944300197. The cubic root of 512899945 is about 800.4684469974.

The spelling of 512899945 in words is "five hundred twelve million, eight hundred ninety-nine thousand, nine hundred forty-five".