512213365 has 4 divisors (see below), whose sum is σ = 614656044. Its totient is φ = 409770688.

The previous prime is 512213329. The next prime is 512213371. The reversal of 512213365 is 563312215.

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 306635121 + 205578244 = 17511^2 + 14338^2 .

It is a cyclic number.

It is not a de Polignac number, because 512213365 - 2¹¹ = 512211317 is a prime.

It is a Duffinian number.

It is a congruent 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, 51221332 + ... + 51221341.

It is an arithmetic number, because the mean of its divisors is an integer number (153664011).

Almost surely, 2^512213365 is an apocalyptic number.

It is an amenable number.

512213365 is a deficient number, since it is larger than the sum of its proper divisors (102442679).

512213365 is a wasteful number, since it uses less digits than its factorization.

512213365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102442678.

The product of its digits is 5400, while the sum is 28.

The square root of 512213365 is about 22632.1312518287. The cubic root of 512213365 is about 800.1111121711. Note that the first 5 decimals are identical.

It can be divided in two parts, 512213 and 365, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 512213365 in words is "five hundred twelve million, two hundred thirteen thousand, three hundred sixty-five".