259997233 has 2 divisors, whose sum is σ = 259997234. Its totient is φ = 259997232.

The previous prime is 259997203. The next prime is 259997237. The reversal of 259997233 is 332799952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259596544 + 400689 = 16112^2 + 633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259997233 is a prime.

It is a super-2 number, since 2×259997233² = 135197122335312578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (259997237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129998616 + 129998617.

It is an arithmetic number, because the mean of its divisors is an integer number (129998617).

Almost surely, 2^259997233 is an apocalyptic number.

It is an amenable number.

259997233 is a deficient number, since it is larger than the sum of its proper divisors (1).

259997233 is an equidigital number, since it uses as much as digits as its factorization.

259997233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 49.

The square root of 259997233 is about 16124.4296953412. The cubic root of 259997233 is about 638.2481657255.

The spelling of 259997233 in words is "two hundred fifty-nine million, nine hundred ninety-seven thousand, two hundred thirty-three".