245747497 has 2 divisors, whose sum is σ = 245747498. Its totient is φ = 245747496.

The previous prime is 245747483. The next prime is 245747507. The reversal of 245747497 is 794747542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244015641 + 1731856 = 15621^2 + 1316^2 .

It is a cyclic number.

It is not a de Polignac number, because 245747497 - 2²³ = 237358889 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 245747497.

It is not a weakly prime, because it can be changed into another prime (245747897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122873748 + 122873749.

It is an arithmetic number, because the mean of its divisors is an integer number (122873749).

Almost surely, 2^245747497 is an apocalyptic number.

It is an amenable number.

245747497 is a deficient number, since it is larger than the sum of its proper divisors (1).

245747497 is an equidigital number, since it uses as much as digits as its factorization.

245747497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 49.

The square root of 245747497 is about 15676.3355730859. The cubic root of 245747497 is about 626.3682001000.

The spelling of 245747497 in words is "two hundred forty-five million, seven hundred forty-seven thousand, four hundred ninety-seven".