254749457 has 2 divisors, whose sum is σ = 254749458. Its totient is φ = 254749456.

The previous prime is 254749423. The next prime is 254749463. The reversal of 254749457 is 754947452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182142016 + 72607441 = 13496^2 + 8521^2 .

It is a cyclic number.

It is not a de Polignac number, because 254749457 - 2⁶ = 254749393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254749057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127374728 + 127374729.

It is an arithmetic number, because the mean of its divisors is an integer number (127374729).

Almost surely, 2^254749457 is an apocalyptic number.

It is an amenable number.

254749457 is a deficient number, since it is larger than the sum of its proper divisors (1).

254749457 is an equidigital number, since it uses as much as digits as its factorization.

254749457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 47.

The square root of 254749457 is about 15960.8726891734. The cubic root of 254749457 is about 633.9248195077.

The spelling of 254749457 in words is "two hundred fifty-four million, seven hundred forty-nine thousand, four hundred fifty-seven".