450720287 has 2 divisors, whose sum is σ = 450720288. Its totient is φ = 450720286.

The previous prime is 450720251. The next prime is 450720289. The reversal of 450720287 is 782027054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450720287 - 2¹⁸ = 450458143 is a prime.

It is a super-2 number, since 2×450720287² = 406297554226724738, which contains 22 as substring.

Together with 450720289, 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 (450720289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225360143 + 225360144.

It is an arithmetic number, because the mean of its divisors is an integer number (225360144).

Almost surely, 2^450720287 is an apocalyptic number.

450720287 is a deficient number, since it is larger than the sum of its proper divisors (1).

450720287 is an equidigital number, since it uses as much as digits as its factorization.

450720287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 450720287 is about 21230.1739747935. The cubic root of 450720287 is about 766.7180757167.

The spelling of 450720287 in words is "four hundred fifty million, seven hundred twenty thousand, two hundred eighty-seven".