450513491 has 2 divisors, whose sum is σ = 450513492. Its totient is φ = 450513490.

The previous prime is 450513457. The next prime is 450513529. The reversal of 450513491 is 194315054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 450513491 - 2²² = 446319187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (450513431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225256745 + 225256746.

It is an arithmetic number, because the mean of its divisors is an integer number (225256746).

Almost surely, 2^450513491 is an apocalyptic number.

450513491 is a deficient number, since it is larger than the sum of its proper divisors (1).

450513491 is an equidigital number, since it uses as much as digits as its factorization.

450513491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 450513491 is about 21225.3030838196. The cubic root of 450513491 is about 766.6007978907.

The spelling of 450513491 in words is "four hundred fifty million, five hundred thirteen thousand, four hundred ninety-one".