245214857 has 2 divisors, whose sum is σ = 245214858. Its totient is φ = 245214856.

The previous prime is 245214821. The next prime is 245214863. The reversal of 245214857 is 758412542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188348176 + 56866681 = 13724^2 + 7541^2 .

It is a cyclic number.

It is not a de Polignac number, because 245214857 - 2²⁰ = 244166281 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245214857.

It is not a weakly prime, because it can be changed into another prime (245214877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122607428 + 122607429.

It is an arithmetic number, because the mean of its divisors is an integer number (122607429).

Almost surely, 2^245214857 is an apocalyptic number.

It is an amenable number.

245214857 is a deficient number, since it is larger than the sum of its proper divisors (1).

245214857 is an equidigital number, since it uses as much as digits as its factorization.

245214857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 38.

The square root of 245214857 is about 15659.3376935297. The cubic root of 245214857 is about 625.9153367727.

The spelling of 245214857 in words is "two hundred forty-five million, two hundred fourteen thousand, eight hundred fifty-seven".