44540143 has 4 divisors (see below), whose sum is σ = 46076040. Its totient is φ = 43004248.

The previous prime is 44540117. The next prime is 44540173. The reversal of 44540143 is 34104544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44540143 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 (44540113) 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, 767905 + ... + 767962.

It is an arithmetic number, because the mean of its divisors is an integer number (11519010).

Almost surely, 2^44540143 is an apocalyptic number.

44540143 is a deficient number, since it is larger than the sum of its proper divisors (1535897).

44540143 is a wasteful number, since it uses less digits than its factorization.

44540143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535896.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 44540143 is about 6673.8401988660. The cubic root of 44540143 is about 354.4735780281.

Adding to 44540143 its reverse (34104544), we get a palindrome (78644687).

The spelling of 44540143 in words is "forty-four million, five hundred forty thousand, one hundred forty-three".