512380621 has 2 divisors, whose sum is σ = 512380622. Its totient is φ = 512380620.

The previous prime is 512380597. The next prime is 512380667. The reversal of 512380621 is 126083215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260015625 + 252364996 = 16125^2 + 15886^2 .

It is a cyclic number.

It is not a de Polignac number, because 512380621 - 2⁹ = 512380109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 512380621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512380681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256190310 + 256190311.

It is an arithmetic number, because the mean of its divisors is an integer number (256190311).

Almost surely, 2^512380621 is an apocalyptic number.

It is an amenable number.

512380621 is a deficient number, since it is larger than the sum of its proper divisors (1).

512380621 is an equidigital number, since it uses as much as digits as its factorization.

512380621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 512380621 is about 22635.8260507541. The cubic root of 512380621 is about 800.1981910005.

The spelling of 512380621 in words is "five hundred twelve million, three hundred eighty thousand, six hundred twenty-one".