412255621 has 2 divisors, whose sum is σ = 412255622. Its totient is φ = 412255620.

The previous prime is 412255573. The next prime is 412255631. The reversal of 412255621 is 126552214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400600225 + 11655396 = 20015^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 412255621 - 2¹¹ = 412253573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 412255621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412255631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206127810 + 206127811.

It is an arithmetic number, because the mean of its divisors is an integer number (206127811).

Almost surely, 2^412255621 is an apocalyptic number.

It is an amenable number.

412255621 is a deficient number, since it is larger than the sum of its proper divisors (1).

412255621 is an equidigital number, since it uses as much as digits as its factorization.

412255621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 412255621 is about 20304.0789251815. The cubic root of 412255621 is about 744.2557442810.

The spelling of 412255621 in words is "four hundred twelve million, two hundred fifty-five thousand, six hundred twenty-one".