450020653 has 4 divisors (see below), whose sum is σ = 450370528. Its totient is φ = 449670780.

The previous prime is 450020611. The next prime is 450020663. The reversal of 450020653 is 356020054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450020653 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 (450020663) 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, 173001 + ... + 175582.

It is an arithmetic number, because the mean of its divisors is an integer number (112592632).

Almost surely, 2^450020653 is an apocalyptic number.

It is an amenable number.

450020653 is a deficient number, since it is larger than the sum of its proper divisors (349875).

450020653 is a wasteful number, since it uses less digits than its factorization.

450020653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349874.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 450020653 is about 21213.6902258895. The cubic root of 450020653 is about 766.3211556132.

The spelling of 450020653 in words is "four hundred fifty million, twenty thousand, six hundred fifty-three".