4521143 has 4 divisors (see below), whose sum is σ = 4932168. Its totient is φ = 4110120.

The previous prime is 4521113. The next prime is 4521151. The reversal of 4521143 is 3411254.

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

It is a cyclic number.

It is not a de Polignac number, because 4521143 - 2⁶ = 4521079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521103) 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, 205496 + ... + 205517.

It is an arithmetic number, because the mean of its divisors is an integer number (1233042).

Almost surely, 2^4521143 is an apocalyptic number.

4521143 is a deficient number, since it is larger than the sum of its proper divisors (411025).

4521143 is a wasteful number, since it uses less digits than its factorization.

4521143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411024.

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

The square root of 4521143 is about 2126.2979565432. The cubic root of 4521143 is about 165.3545239091.

Adding to 4521143 its reverse (3411254), we get a palindrome (7932397).

It can be divided in two parts, 45211 and 43, that added together give a palindrome (45254).

The spelling of 4521143 in words is "four million, five hundred twenty-one thousand, one hundred forty-three".