512147065 has 4 divisors (see below), whose sum is σ = 614576484. Its totient is φ = 409717648.

The previous prime is 512147059. The next prime is 512147089. The reversal of 512147065 is 560741215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 215032896 + 297114169 = 14664^2 + 17237^2 .

It is a cyclic number.

It is not a de Polignac number, because 512147065 - 2³ = 512147057 is a prime.

It is a super-2 number, since 2×512147065² = 524589232376228450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51214702 + ... + 51214711.

It is an arithmetic number, because the mean of its divisors is an integer number (153644121).

Almost surely, 2^512147065 is an apocalyptic number.

It is an amenable number.

512147065 is a deficient number, since it is larger than the sum of its proper divisors (102429419).

512147065 is a wasteful number, since it uses less digits than its factorization.

512147065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102429418.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 512147065 is about 22630.6664727312. Note that the first 3 decimals coincide. The cubic root of 512147065 is about 800.0765890216.

The spelling of 512147065 in words is "five hundred twelve million, one hundred forty-seven thousand, sixty-five".