512285381 has 8 divisors (see below), whose sum is σ = 522046200. Its totient is φ = 502568640.

The previous prime is 512285329. The next prime is 512285399. The reversal of 512285381 is 183582215.

It can be written as a sum of positive squares in 4 ways, for example, as 1932100 + 510353281 = 1390^2 + 22591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 512285381 - 2¹⁴ = 512268997 is a prime.

It is a super-2 number, since 2×512285381² = 524872623172630322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512285321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12935 + ... + 34523.

It is an arithmetic number, because the mean of its divisors is an integer number (65255775).

Almost surely, 2^512285381 is an apocalyptic number.

It is an amenable number.

512285381 is a deficient number, since it is larger than the sum of its proper divisors (9760819).

512285381 is a wasteful number, since it uses less digits than its factorization.

512285381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22039.

The product of its digits is 19200, while the sum is 35.

The square root of 512285381 is about 22633.7222082449. The cubic root of 512285381 is about 800.1486083302.

The spelling of 512285381 in words is "five hundred twelve million, two hundred eighty-five thousand, three hundred eighty-one".