4452421 has 4 divisors (see below), whose sum is σ = 4467232. Its totient is φ = 4437612.

The previous prime is 4452407. The next prime is 4452431. The reversal of 4452421 is 1242544.

It is a happy number.

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 not a de Polignac number, because 4452421 - 2⁷ = 4452293 is a prime.

It is a super-2 number, since 2×4452421² = 39648105522482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4452392 and 4452401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4452431) 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, 6945 + ... + 7558.

It is an arithmetic number, because the mean of its divisors is an integer number (1116808).

Almost surely, 2^4452421 is an apocalyptic number.

It is an amenable number.

4452421 is a deficient number, since it is larger than the sum of its proper divisors (14811).

4452421 is a wasteful number, since it uses less digits than its factorization.

4452421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14810.

The product of its digits is 1280, while the sum is 22.

The square root of 4452421 is about 2110.0760649796. The cubic root of 4452421 is about 164.5124388927.

Adding to 4452421 its reverse (1242544), we get a palindrome (5694965).

The spelling of 4452421 in words is "four million, four hundred fifty-two thousand, four hundred twenty-one".