450222191 has 2 divisors, whose sum is σ = 450222192. Its totient is φ = 450222190.

The previous prime is 450222163. The next prime is 450222193. The reversal of 450222191 is 191222054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450222191 - 2⁶ = 450222127 is a prime.

Together with 450222193, it forms a pair of twin primes.

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 450222191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450222193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225111095 + 225111096.

It is an arithmetic number, because the mean of its divisors is an integer number (225111096).

Almost surely, 2^450222191 is an apocalyptic number.

450222191 is a deficient number, since it is larger than the sum of its proper divisors (1).

450222191 is an equidigital number, since it uses as much as digits as its factorization.

450222191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 450222191 is about 21218.4398813862. The cubic root of 450222191 is about 766.4355353885.

The spelling of 450222191 in words is "four hundred fifty million, two hundred twenty-two thousand, one hundred ninety-one".