245538257 has 2 divisors, whose sum is σ = 245538258. Its totient is φ = 245538256.

The previous prime is 245538229. The next prime is 245538287. The reversal of 245538257 is 752835542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176996416 + 68541841 = 13304^2 + 8279^2 .

It is a cyclic number.

It is not a de Polignac number, because 245538257 - 2⁶ = 245538193 is a prime.

It is not a weakly prime, because it can be changed into another prime (245538287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122769128 + 122769129.

It is an arithmetic number, because the mean of its divisors is an integer number (122769129).

Almost surely, 2^245538257 is an apocalyptic number.

It is an amenable number.

245538257 is a deficient number, since it is larger than the sum of its proper divisors (1).

245538257 is an equidigital number, since it uses as much as digits as its factorization.

245538257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 41.

The square root of 245538257 is about 15669.6603983622. The cubic root of 245538257 is about 626.1903773368.

The spelling of 245538257 in words is "two hundred forty-five million, five hundred thirty-eight thousand, two hundred fifty-seven".