4531421 has 4 divisors (see below), whose sum is σ = 4566144. Its totient is φ = 4496700.

The previous prime is 4531409. The next prime is 4531441. The reversal of 4531421 is 1241354.

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 4531421 - 2⁶ = 4531357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4531393 and 4531402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17165 + ... + 17426.

It is an arithmetic number, because the mean of its divisors is an integer number (1141536).

Almost surely, 2^4531421 is an apocalyptic number.

It is an amenable number.

4531421 is a deficient number, since it is larger than the sum of its proper divisors (34723).

4531421 is a wasteful number, since it uses less digits than its factorization.

4531421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34722.

The product of its digits is 480, while the sum is 20.

The square root of 4531421 is about 2128.7134612249. The cubic root of 4531421 is about 165.4797302692.

Adding to 4531421 its reverse (1241354), we get a palindrome (5772775).

The spelling of 4531421 in words is "four million, five hundred thirty-one thousand, four hundred twenty-one".