255945401 has 2 divisors, whose sum is σ = 255945402. Its totient is φ = 255945400.

The previous prime is 255945397. The next prime is 255945479. The reversal of 255945401 is 104549552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251539600 + 4405801 = 15860^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 255945401 - 2² = 255945397 is a prime.

It is not a weakly prime, because it can be changed into another prime (255945491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127972700 + 127972701.

It is an arithmetic number, because the mean of its divisors is an integer number (127972701).

Almost surely, 2^255945401 is an apocalyptic number.

It is an amenable number.

255945401 is a deficient number, since it is larger than the sum of its proper divisors (1).

255945401 is an equidigital number, since it uses as much as digits as its factorization.

255945401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 255945401 is about 15998.2936902658. The cubic root of 255945401 is about 634.9152766871.

The spelling of 255945401 in words is "two hundred fifty-five million, nine hundred forty-five thousand, four hundred one".