254745761 has 2 divisors, whose sum is σ = 254745762. Its totient is φ = 254745760.

The previous prime is 254745739. The next prime is 254745763. The reversal of 254745761 is 167547452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183765136 + 70980625 = 13556^2 + 8425^2 .

It is a cyclic number.

It is not a de Polignac number, because 254745761 - 2¹⁸ = 254483617 is a prime.

Together with 254745763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254745763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127372880 + 127372881.

It is an arithmetic number, because the mean of its divisors is an integer number (127372881).

Almost surely, 2^254745761 is an apocalyptic number.

It is an amenable number.

254745761 is a deficient number, since it is larger than the sum of its proper divisors (1).

254745761 is an equidigital number, since it uses as much as digits as its factorization.

254745761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 41.

The square root of 254745761 is about 15960.7569056107. The cubic root of 254745761 is about 633.9217537538.

The spelling of 254745761 in words is "two hundred fifty-four million, seven hundred forty-five thousand, seven hundred sixty-one".