255633841 has 2 divisors, whose sum is σ = 255633842. Its totient is φ = 255633840.

The previous prime is 255633817. The next prime is 255633881. The reversal of 255633841 is 148336552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253446400 + 2187441 = 15920^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 255633841 - 2⁷ = 255633713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255633841.

It is not a weakly prime, because it can be changed into another prime (255633881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127816920 + 127816921.

It is an arithmetic number, because the mean of its divisors is an integer number (127816921).

Almost surely, 2^255633841 is an apocalyptic number.

It is an amenable number.

255633841 is a deficient number, since it is larger than the sum of its proper divisors (1).

255633841 is an equidigital number, since it uses as much as digits as its factorization.

255633841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 37.

The square root of 255633841 is about 15988.5534367559. The cubic root of 255633841 is about 634.6575465580.

The spelling of 255633841 in words is "two hundred fifty-five million, six hundred thirty-three thousand, eight hundred forty-one".