453921 has 16 divisors (see below), whose sum is σ = 663936. Its totient is φ = 274176.

The previous prime is 453913. The next prime is 453923. The reversal of 453921 is 129354.

It is not a de Polignac number, because 453921 - 2³ = 453913 is a prime.

It is a Curzon number.

453921 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 453891 and 453900.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 453921.

It is not an unprimeable number, because it can be changed into a prime (453923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3961 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2⁴⁵³⁹²¹ is an apocalyptic number.

It is an amenable number.

453921 is a deficient number, since it is larger than the sum of its proper divisors (210015).

453921 is a wasteful number, since it uses less digits than its factorization.

453921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its digits is 1080, while the sum is 24.

The square root of 453921 is about 673.7365954140. The cubic root of 453921 is about 76.8528702248.

It can be divided in two parts, 4539 and 21, that added together give a triangular number (4560 = T₉₅).

The spelling of 453921 in words is "four hundred fifty-three thousand, nine hundred twenty-one".