4503921 has 4 divisors (see below), whose sum is σ = 6005232. Its totient is φ = 3002612.

The previous prime is 4503913. The next prime is 4503923. The reversal of 4503921 is 1293054.

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 4503921 - 2³ = 4503913 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 4503891 and 4503900.

It is not an unprimeable number, because it can be changed into a prime (4503923) 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, 750651 + ... + 750656.

It is an arithmetic number, because the mean of its divisors is an integer number (1501308).

Almost surely, 2^4503921 is an apocalyptic number.

It is an amenable number.

4503921 is a deficient number, since it is larger than the sum of its proper divisors (1501311).

4503921 is a wasteful number, since it uses less digits than its factorization.

4503921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501310.

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

The square root of 4503921 is about 2122.2443308912. The cubic root of 4503921 is about 165.1442998455.

Adding to 4503921 its reverse (1293054), we get a palindrome (5796975).

It can be divided in two parts, 450 and 3921, that added together give a triangular number (4371 = T₉₃).

The spelling of 4503921 in words is "four million, five hundred three thousand, nine hundred twenty-one".