15011281 has 2 divisors, whose sum is σ = 15011282. Its totient is φ = 15011280.

The previous prime is 15011279. The next prime is 15011287. The reversal of 15011281 is 18211051.

It is a happy number.

15011281 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., 12138256 + 2873025 = 3484^2 + 1695^2 .

It is an emirp because it is prime and its reverse (18211051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15011281 - 2¹ = 15011279 is a prime.

It is a super-2 number, since 2×15011281² = 450677114521922, which contains 22 as substring.

Together with 15011279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15011287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7505640 + 7505641.

It is an arithmetic number, because the mean of its divisors is an integer number (7505641).

Almost surely, 2^15011281 is an apocalyptic number.

It is an amenable number.

15011281 is a deficient number, since it is larger than the sum of its proper divisors (1).

15011281 is an equidigital number, since it uses as much as digits as its factorization.

15011281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 15011281 is about 3874.4394433260. The cubic root of 15011281 is about 246.6830171371.

The spelling of 15011281 in words is "fifteen million, eleven thousand, two hundred eighty-one".