450830621 has 4 divisors (see below), whose sum is σ = 451388700. Its totient is φ = 450272544.

The previous prime is 450830587. The next prime is 450830693. The reversal of 450830621 is 126038054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 282609721 + 168220900 = 16811^2 + 12970^2 .

It is a cyclic number.

It is not a de Polignac number, because 450830621 - 2²² = 446636317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450830221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277826 + ... + 279443.

It is an arithmetic number, because the mean of its divisors is an integer number (112847175).

Almost surely, 2^450830621 is an apocalyptic number.

It is an amenable number.

450830621 is a deficient number, since it is larger than the sum of its proper divisors (558079).

450830621 is an equidigital number, since it uses as much as digits as its factorization.

450830621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558078.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 450830621 is about 21232.7723342949. The cubic root of 450830621 is about 766.7806334883.

Adding to 450830621 its reverse (126038054), we get a palindrome (576868675).

The spelling of 450830621 in words is "four hundred fifty million, eight hundred thirty thousand, six hundred twenty-one".