15113261 has 2 divisors, whose sum is σ = 15113262. Its totient is φ = 15113260.

The previous prime is 15113239. The next prime is 15113269. The reversal of 15113261 is 16231151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 3587236 = 3395^2 + 1894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15113261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15113269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7556630 + 7556631.

It is an arithmetic number, because the mean of its divisors is an integer number (7556631).

Almost surely, 2^15113261 is an apocalyptic number.

It is an amenable number.

15113261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15113261 is an equidigital number, since it uses as much as digits as its factorization.

15113261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 20.

The square root of 15113261 is about 3887.5777805724. The cubic root of 15113261 is about 247.2403753048.

It can be divided in two parts, 15113 and 261, that multiplied together give a palindrome (3944493).

The spelling of 15113261 in words is "fifteen million, one hundred thirteen thousand, two hundred sixty-one".