15116261 has 2 divisors, whose sum is σ = 15116262. Its totient is φ = 15116260.

The previous prime is 15116201. The next prime is 15116273. The reversal of 15116261 is 16261151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13184161 + 1932100 = 3631^2 + 1390^2 .

It is an emirp because it is prime and its reverse (16261151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15116261 - 2⁶ = 15116197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15116201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7558130 + 7558131.

It is an arithmetic number, because the mean of its divisors is an integer number (7558131).

Almost surely, 2^15116261 is an apocalyptic number.

It is an amenable number.

15116261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15116261 is an equidigital number, since it uses as much as digits as its factorization.

15116261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 23.

The square root of 15116261 is about 3887.9636057967. The cubic root of 15116261 is about 247.2567333905.

The spelling of 15116261 in words is "fifteen million, one hundred sixteen thousand, two hundred sixty-one".