288738257 has 2 divisors, whose sum is σ = 288738258. Its totient is φ = 288738256.

The previous prime is 288738227. The next prime is 288738283. The reversal of 288738257 is 752837882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287336401 + 1401856 = 16951^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 288738257 - 2⁸ = 288738001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (288738227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144369128 + 144369129.

It is an arithmetic number, because the mean of its divisors is an integer number (144369129).

Almost surely, 2^288738257 is an apocalyptic number.

It is an amenable number.

288738257 is a deficient number, since it is larger than the sum of its proper divisors (1).

288738257 is an equidigital number, since it uses as much as digits as its factorization.

288738257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 50.

The square root of 288738257 is about 16992.2999326165. The cubic root of 288738257 is about 660.9492439835.

The spelling of 288738257 in words is "two hundred eighty-eight million, seven hundred thirty-eight thousand, two hundred fifty-seven".