15136081 has 2 divisors, whose sum is σ = 15136082. Its totient is φ = 15136080.

The previous prime is 15136073. The next prime is 15136117. The reversal of 15136081 is 18063151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 50625 = 3884^2 + 225^2 .

It is an emirp because it is prime and its reverse (18063151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15136081 - 2³ = 15136073 is a prime.

It is a super-2 number, since 2×15136081² = 458201896077122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15130081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7568040 + 7568041.

It is an arithmetic number, because the mean of its divisors is an integer number (7568041).

Almost surely, 2^15136081 is an apocalyptic number.

It is an amenable number.

15136081 is a deficient number, since it is larger than the sum of its proper divisors (1).

15136081 is an equidigital number, since it uses as much as digits as its factorization.

15136081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 15136081 is about 3890.5116630078. The cubic root of 15136081 is about 247.3647514637.

The spelling of 15136081 in words is "fifteen million, one hundred thirty-six thousand, eighty-one".