255341621 has 2 divisors, whose sum is σ = 255341622. Its totient is φ = 255341620.

The previous prime is 255341591. The next prime is 255341657. The reversal of 255341621 is 126143552.

255341621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190716100 + 64625521 = 13810^2 + 8039^2 .

It is a cyclic number.

It is not a de Polignac number, because 255341621 - 2¹⁴ = 255325237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255331621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127670810 + 127670811.

It is an arithmetic number, because the mean of its divisors is an integer number (127670811).

Almost surely, 2^255341621 is an apocalyptic number.

It is an amenable number.

255341621 is a deficient number, since it is larger than the sum of its proper divisors (1).

255341621 is an equidigital number, since it uses as much as digits as its factorization.

255341621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 255341621 is about 15979.4124109743. The cubic root of 255341621 is about 634.4156245705.

The spelling of 255341621 in words is "two hundred fifty-five million, three hundred forty-one thousand, six hundred twenty-one".