15100081 has 2 divisors, whose sum is σ = 15100082. Its totient is φ = 15100080.

The previous prime is 15100073. The next prime is 15100091. The reversal of 15100081 is 18000151.

15100081 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., 12666481 + 2433600 = 3559^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 15100081 - 2³ = 15100073 is a prime.

It is a super-2 number, since 2×15100081² = 456024892413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15100051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7550040 + 7550041.

It is an arithmetic number, because the mean of its divisors is an integer number (7550041).

Almost surely, 2^15100081 is an apocalyptic number.

It is an amenable number.

15100081 is a deficient number, since it is larger than the sum of its proper divisors (1).

15100081 is an equidigital number, since it uses as much as digits as its factorization.

15100081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 15100081 is about 3885.8822679026. The cubic root of 15100081 is about 247.1684831242.

The spelling of 15100081 in words is "fifteen million, one hundred thousand, eighty-one".