450250991 has 2 divisors, whose sum is σ = 450250992. Its totient is φ = 450250990.

The previous prime is 450250963. The next prime is 450250993. The reversal of 450250991 is 199052054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450250991 - 2²⁶ = 383142127 is a prime.

Together with 450250993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450250993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225125495 + 225125496.

It is an arithmetic number, because the mean of its divisors is an integer number (225125496).

Almost surely, 2^450250991 is an apocalyptic number.

450250991 is a deficient number, since it is larger than the sum of its proper divisors (1).

450250991 is an equidigital number, since it uses as much as digits as its factorization.

450250991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 450250991 is about 21219.1185255184. The cubic root of 450250991 is about 766.4518775956.

The spelling of 450250991 in words is "four hundred fifty million, two hundred fifty thousand, nine hundred ninety-one".