512581361 has 2 divisors, whose sum is σ = 512581362. Its totient is φ = 512581360.

The previous prime is 512581343. The next prime is 512581367. The reversal of 512581361 is 163185215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381616225 + 130965136 = 19535^2 + 11444^2 .

It is a cyclic number.

It is not a de Polignac number, because 512581361 - 2¹⁸ = 512319217 is a prime.

It is a super-2 number, since 2×512581361² = 525479303289224642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (512581367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256290680 + 256290681.

It is an arithmetic number, because the mean of its divisors is an integer number (256290681).

Almost surely, 2^512581361 is an apocalyptic number.

It is an amenable number.

512581361 is a deficient number, since it is larger than the sum of its proper divisors (1).

512581361 is an equidigital number, since it uses as much as digits as its factorization.

512581361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 512581361 is about 22640.2597379094. The cubic root of 512581361 is about 800.3026776559.

The spelling of 512581361 in words is "five hundred twelve million, five hundred eighty-one thousand, three hundred sixty-one".