264200257 has 2 divisors, whose sum is σ = 264200258. Its totient is φ = 264200256.

The previous prime is 264200243. The next prime is 264200267. The reversal of 264200257 is 752002462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263218176 + 982081 = 16224^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 264200257 - 2⁷ = 264200129 is a prime.

It is not a weakly prime, because it can be changed into another prime (264200267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132100128 + 132100129.

It is an arithmetic number, because the mean of its divisors is an integer number (132100129).

Almost surely, 2^264200257 is an apocalyptic number.

It is an amenable number.

264200257 is a deficient number, since it is larger than the sum of its proper divisors (1).

264200257 is an equidigital number, since it uses as much as digits as its factorization.

264200257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 264200257 is about 16254.2381242555. The cubic root of 264200257 is about 641.6690298521.

The spelling of 264200257 in words is "two hundred sixty-four million, two hundred thousand, two hundred fifty-seven".