453321540 has 216 divisors, whose sum is σ = 1618344000. Its totient is φ = 102404736.

The previous prime is 453321509. The next prime is 453321553. The reversal of 453321540 is 45123354.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 908211 + ... + 908709.

Almost surely, 2^453321540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 453321540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809172000).

453321540 is an abundant number, since it is smaller than the sum of its proper divisors (1165022460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

453321540 is a wasteful number, since it uses less digits than its factorization.

453321540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 453321540 is about 21291.3489474011. The cubic root of 453321540 is about 768.1902401441.

Adding to 453321540 its reverse (45123354), we get a palindrome (498444894).

The spelling of 453321540 in words is "four hundred fifty-three million, three hundred twenty-one thousand, five hundred forty".