4544421 has 8 divisors (see below), whose sum is σ = 6924864. Its totient is φ = 2596800.

The previous prime is 4544417. The next prime is 4544431. The reversal of 4544421 is 1244454.

It is a happy number.

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

It is not a de Polignac number, because 4544421 - 2² = 4544417 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4544391 and 4544400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4544411) 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, 108180 + ... + 108221.

It is an arithmetic number, because the mean of its divisors is an integer number (865608).

Almost surely, 2^4544421 is an apocalyptic number.

It is an amenable number.

4544421 is a deficient number, since it is larger than the sum of its proper divisors (2380443).

4544421 is a wasteful number, since it uses less digits than its factorization.

4544421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216411.

The product of its digits is 2560, while the sum is 24.

The square root of 4544421 is about 2131.7647618816. The cubic root of 4544421 is about 165.6378250897.

Adding to 4544421 its reverse (1244454), we get a palindrome (5788875).

The spelling of 4544421 in words is "four million, five hundred forty-four thousand, four hundred twenty-one".