54982138 has 4 divisors (see below), whose sum is σ = 82473210. Its totient is φ = 27491068.

The previous prime is 54982133. The next prime is 54982171. The reversal of 54982138 is 83128945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83128945 = 5 ⋅16625789.

It can be written as a sum of positive squares in only one way, i.e., 38229489 + 16752649 = 6183^2 + 4093^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 54982138.

It is not an unprimeable number, because it can be changed into a prime (54982133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13745533 + ... + 13745536.

Almost surely, 2^54982138 is an apocalyptic number.

54982138 is a deficient number, since it is larger than the sum of its proper divisors (27491072).

54982138 is a wasteful number, since it uses less digits than its factorization.

54982138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27491071.

The product of its digits is 69120, while the sum is 40.

The square root of 54982138 is about 7414.9941335108. The cubic root of 54982138 is about 380.2540729296.

The spelling of 54982138 in words is "fifty-four million, nine hundred eighty-two thousand, one hundred thirty-eight".