54142181 has 4 divisors (see below), whose sum is σ = 55462764. Its totient is φ = 52821600.

The previous prime is 54142163. The next prime is 54142183. The reversal of 54142181 is 18124145.

54142181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29052100 + 25090081 = 5390^2 + 5009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54142181 is a prime.

It is a super-2 number, since 2×54142181² = 5862751526873522, which contains 22 as substring.

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 54142181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54142183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660230 + ... + 660311.

It is an arithmetic number, because the mean of its divisors is an integer number (13865691).

Almost surely, 2^54142181 is an apocalyptic number.

It is an amenable number.

54142181 is a deficient number, since it is larger than the sum of its proper divisors (1320583).

54142181 is a wasteful number, since it uses less digits than its factorization.

54142181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320582.

The product of its digits is 1280, while the sum is 26.

The square root of 54142181 is about 7358.1370604250. The cubic root of 54142181 is about 378.3077591223.

The spelling of 54142181 in words is "fifty-four million, one hundred forty-two thousand, one hundred eighty-one".