264916261 has 2 divisors, whose sum is σ = 264916262. Its totient is φ = 264916260.

The previous prime is 264916237. The next prime is 264916273. The reversal of 264916261 is 162619462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250430625 + 14485636 = 15825^2 + 3806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264916261 is a prime.

It is equal to p_14449465 and since 264916261 and 14449465 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264916261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264916291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132458130 + 132458131.

It is an arithmetic number, because the mean of its divisors is an integer number (132458131).

Almost surely, 2^264916261 is an apocalyptic number.

It is an amenable number.

264916261 is a deficient number, since it is larger than the sum of its proper divisors (1).

264916261 is an equidigital number, since it uses as much as digits as its factorization.

264916261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 264916261 is about 16276.2483699408. The cubic root of 264916261 is about 642.2481652692.

The spelling of 264916261 in words is "two hundred sixty-four million, nine hundred sixteen thousand, two hundred sixty-one".