450203513 has 4 divisors (see below), whose sum is σ = 451003728. Its totient is φ = 449403300.

The previous prime is 450203491. The next prime is 450203581. The reversal of 450203513 is 315302054.

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-450203513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450203113) 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, 399263 + ... + 400388.

It is an arithmetic number, because the mean of its divisors is an integer number (112750932).

Almost surely, 2^450203513 is an apocalyptic number.

It is an amenable number.

450203513 is a deficient number, since it is larger than the sum of its proper divisors (800215).

450203513 is an equidigital number, since it uses as much as digits as its factorization.

450203513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800214.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 450203513 is about 21217.9997407861. Note that the first 3 decimals coincide. The cubic root of 450203513 is about 766.4249364138.

Adding to 450203513 its reverse (315302054), we get a palindrome (765505567).

The spelling of 450203513 in words is "four hundred fifty million, two hundred three thousand, five hundred thirteen".