15266261 has 2 divisors, whose sum is σ = 15266262. Its totient is φ = 15266260.

The previous prime is 15266249. The next prime is 15266269. The reversal of 15266261 is 16266251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14205361 + 1060900 = 3769^2 + 1030^2 .

It is an emirp because it is prime and its reverse (16266251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15266261 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15266269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7633130 + 7633131.

It is an arithmetic number, because the mean of its divisors is an integer number (7633131).

Almost surely, 2^15266261 is an apocalyptic number.

It is an amenable number.

15266261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15266261 is an equidigital number, since it uses as much as digits as its factorization.

15266261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 15266261 is about 3907.2062909450. The cubic root of 15266261 is about 248.0718931786.

The spelling of 15266261 in words is "fifteen million, two hundred sixty-six thousand, two hundred sixty-one".