15255281 has 2 divisors, whose sum is σ = 15255282. Its totient is φ = 15255280.

The previous prime is 15255277. The next prime is 15255301. The reversal of 15255281 is 18255251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14371681 + 883600 = 3791^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 15255281 - 2² = 15255277 is a prime.

It is a super-2 number, since 2×15255281² = 465447196777922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15255181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7627640 + 7627641.

It is an arithmetic number, because the mean of its divisors is an integer number (7627641).

Almost surely, 2^15255281 is an apocalyptic number.

It is an amenable number.

15255281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15255281 is an equidigital number, since it uses as much as digits as its factorization.

15255281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 29.

The square root of 15255281 is about 3905.8009421884. The cubic root of 15255281 is about 248.0124050767.

The spelling of 15255281 in words is "fifteen million, two hundred fifty-five thousand, two hundred eighty-one".