254640041 has 2 divisors, whose sum is σ = 254640042. Its totient is φ = 254640040.

The previous prime is 254640017. The next prime is 254640049. The reversal of 254640041 is 140046452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196560400 + 58079641 = 14020^2 + 7621^2 .

It is a cyclic number.

It is not a de Polignac number, because 254640041 - 2⁶ = 254639977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254640049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127320020 + 127320021.

It is an arithmetic number, because the mean of its divisors is an integer number (127320021).

Almost surely, 2^254640041 is an apocalyptic number.

It is an amenable number.

254640041 is a deficient number, since it is larger than the sum of its proper divisors (1).

254640041 is an equidigital number, since it uses as much as digits as its factorization.

254640041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 254640041 is about 15957.4446889218. Note that the first 3 decimals coincide. The cubic root of 254640041 is about 633.8340486884.

Adding to 254640041 its reverse (140046452), we get a palindrome (394686493).

The spelling of 254640041 in words is "two hundred fifty-four million, six hundred forty thousand, forty-one".