15009481 has 2 divisors, whose sum is σ = 15009482. Its totient is φ = 15009480.

The previous prime is 15009437. The next prime is 15009493. The reversal of 15009481 is 18490051.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12187081 + 2822400 = 3491^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 15009481 - 2¹³ = 15001289 is a prime.

It is a super-2 number, since 2×15009481² = 450569039778722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15009781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7504740 + 7504741.

It is an arithmetic number, because the mean of its divisors is an integer number (7504741).

Almost surely, 2^15009481 is an apocalyptic number.

It is an amenable number.

15009481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15009481 is an equidigital number, since it uses as much as digits as its factorization.

15009481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 15009481 is about 3874.2071446943. The cubic root of 15009481 is about 246.6731568376.

The spelling of 15009481 in words is "fifteen million, nine thousand, four hundred eighty-one".