15340261 has 2 divisors, whose sum is σ = 15340262. Its totient is φ = 15340260.

The previous prime is 15340229. The next prime is 15340279. The reversal of 15340261 is 16204351.

15340261 = 2769² + 2770².

15340261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7672900 + 7667361 = 2770^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 15340261 - 2⁵ = 15340229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15340211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670130 + 7670131.

It is an arithmetic number, because the mean of its divisors is an integer number (7670131).

Almost surely, 2^15340261 is an apocalyptic number.

15340261 is the 2770-th centered square number.

It is an amenable number.

15340261 is a deficient number, since it is larger than the sum of its proper divisors (1).

15340261 is an equidigital number, since it uses as much as digits as its factorization.

15340261 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 22.

The square root of 15340261 is about 3916.6645248221. The cubic root of 15340261 is about 248.4720727778.

The spelling of 15340261 in words is "fifteen million, three hundred forty thousand, two hundred sixty-one".