254433391 has 2 divisors, whose sum is σ = 254433392. Its totient is φ = 254433390.

The previous prime is 254433367. The next prime is 254433401. The reversal of 254433391 is 193334452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254433391 - 2⁹ = 254432879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254433191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127216695 + 127216696.

It is an arithmetic number, because the mean of its divisors is an integer number (127216696).

Almost surely, 2^254433391 is an apocalyptic number.

254433391 is a deficient number, since it is larger than the sum of its proper divisors (1).

254433391 is an equidigital number, since it uses as much as digits as its factorization.

254433391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 254433391 is about 15950.9683405115. The cubic root of 254433391 is about 633.6625422044.

The spelling of 254433391 in words is "two hundred fifty-four million, four hundred thirty-three thousand, three hundred ninety-one".