4521423 has 4 divisors (see below), whose sum is σ = 6028568. Its totient is φ = 3014280.

The previous prime is 4521421. The next prime is 4521427. The reversal of 4521423 is 3241254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4521423 - 2¹ = 4521421 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4521423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521421) 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, 753568 + ... + 753573.

It is an arithmetic number, because the mean of its divisors is an integer number (1507142).

Almost surely, 2^4521423 is an apocalyptic number.

4521423 is a deficient number, since it is larger than the sum of its proper divisors (1507145).

4521423 is a wasteful number, since it uses less digits than its factorization.

4521423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507144.

The product of its digits is 960, while the sum is 21.

The square root of 4521423 is about 2126.3637976602. The cubic root of 4521423 is about 165.3579373756.

Adding to 4521423 its reverse (3241254), we get a palindrome (7762677).

The spelling of 4521423 in words is "four million, five hundred twenty-one thousand, four hundred twenty-three".