54139183 has 4 divisors (see below), whose sum is σ = 61873360. Its totient is φ = 46405008.

The previous prime is 54139153. The next prime is 54139187. The reversal of 54139183 is 38193145.

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-54139183 is a prime.

It is a super-2 number, since 2×54139183² = 5862102271814978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54139187) 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, 3867078 + ... + 3867091.

It is an arithmetic number, because the mean of its divisors is an integer number (15468340).

Almost surely, 2^54139183 is an apocalyptic number.

54139183 is a deficient number, since it is larger than the sum of its proper divisors (7734177).

54139183 is an equidigital number, since it uses as much as digits as its factorization.

54139183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7734176.

The product of its digits is 12960, while the sum is 34.

The square root of 54139183 is about 7357.9333375616. The cubic root of 54139183 is about 378.3007763498.

The spelling of 54139183 in words is "fifty-four million, one hundred thirty-nine thousand, one hundred eighty-three".