453530021 has 8 divisors (see below), whose sum is σ = 519628800. Its totient is φ = 387758448.

The previous prime is 453529933. The next prime is 453530023. The reversal of 453530021 is 120035354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 453530021 - 2¹⁰ = 453528997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453530023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78821 + ... + 84378.

It is an arithmetic number, because the mean of its divisors is an integer number (64953600).

Almost surely, 2^453530021 is an apocalyptic number.

It is an amenable number.

453530021 is a deficient number, since it is larger than the sum of its proper divisors (66098779).

453530021 is a wasteful number, since it uses less digits than its factorization.

453530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163603.

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

The square root of 453530021 is about 21296.2442933020. The cubic root of 453530021 is about 768.3079847693.

Adding to 453530021 its reverse (120035354), we get a palindrome (573565375).

The spelling of 453530021 in words is "four hundred fifty-three million, five hundred thirty thousand, twenty-one".