15256481 has 2 divisors, whose sum is σ = 15256482. Its totient is φ = 15256480.

The previous prime is 15256471. The next prime is 15256499. The reversal of 15256481 is 18465251.

15256481 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., 10504081 + 4752400 = 3241^2 + 2180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15256481 is a prime.

It is a super-2 number, since 2×15256481² = 465520425006722, which contains 22 as substring.

It is a Chen prime.

It is equal to p₉₈₆₂₀₇ and since 15256481 and 986207 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (15256471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7628240 + 7628241.

It is an arithmetic number, because the mean of its divisors is an integer number (7628241).

Almost surely, 2^15256481 is an apocalyptic number.

It is an amenable number.

15256481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15256481 is an equidigital number, since it uses as much as digits as its factorization.

15256481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 15256481 is about 3905.9545568273. The cubic root of 15256481 is about 248.0189078976.

The spelling of 15256481 in words is "fifteen million, two hundred fifty-six thousand, four hundred eighty-one".