15039481 has 2 divisors, whose sum is σ = 15039482. Its totient is φ = 15039480.

The previous prime is 15039473. The next prime is 15039491. The reversal of 15039481 is 18493051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 2223081 = 3580^2 + 1491^2 .

It is a cyclic number.

It is not a de Polignac number, because 15039481 - 2³ = 15039473 is a prime.

It is a super-2 number, since 2×15039481² = 452371977498722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15039461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7519740 + 7519741.

It is an arithmetic number, because the mean of its divisors is an integer number (7519741).

Almost surely, 2^15039481 is an apocalyptic number.

It is an amenable number.

15039481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15039481 is an equidigital number, since it uses as much as digits as its factorization.

15039481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 15039481 is about 3878.0769719024. The cubic root of 15039481 is about 246.8373923593.

The spelling of 15039481 in words is "fifteen million, thirty-nine thousand, four hundred eighty-one".