54040143 has 4 divisors (see below), whose sum is σ = 72053528. Its totient is φ = 36026760.

The previous prime is 54040141. The next prime is 54040157. The reversal of 54040143 is 34104045.

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

It is not a de Polignac number, because 54040143 - 2¹ = 54040141 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 (54040141) 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, 9006688 + ... + 9006693.

It is an arithmetic number, because the mean of its divisors is an integer number (18013382).

Almost surely, 2^54040143 is an apocalyptic number.

54040143 is a deficient number, since it is larger than the sum of its proper divisors (18013385).

54040143 is a wasteful number, since it uses less digits than its factorization.

54040143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18013384.

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

The square root of 54040143 is about 7351.2001061051. The cubic root of 54040143 is about 378.0699529001.

Adding to 54040143 its reverse (34104045), we get a palindrome (88144188).

The spelling of 54040143 in words is "fifty-four million, forty thousand, one hundred forty-three".