264242497 has 2 divisors, whose sum is σ = 264242498. Its totient is φ = 264242496.

The previous prime is 264242491. The next prime is 264242501. The reversal of 264242497 is 794242462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201895681 + 62346816 = 14209^2 + 7896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264242497 is a prime.

It is not a weakly prime, because it can be changed into another prime (264242491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132121248 + 132121249.

It is an arithmetic number, because the mean of its divisors is an integer number (132121249).

Almost surely, 2^264242497 is an apocalyptic number.

It is an amenable number.

264242497 is a deficient number, since it is larger than the sum of its proper divisors (1).

264242497 is an equidigital number, since it uses as much as digits as its factorization.

264242497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 40.

The square root of 264242497 is about 16255.5374257513. The cubic root of 264242497 is about 641.7032244384.

The spelling of 264242497 in words is "two hundred sixty-four million, two hundred forty-two thousand, four hundred ninety-seven".