54138773 has 4 divisors (see below), whose sum is σ = 58303308. Its totient is φ = 49974240.

The previous prime is 54138731. The next prime is 54138787. The reversal of 54138773 is 37783145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37783145 = 5 ⋅7556629.

It can be written as a sum of positive squares in 2 ways, for example, as 3771364 + 50367409 = 1942^2 + 7097^2 .

It is a cyclic number.

It is not a de Polignac number, because 54138773 - 2⁶ = 54138709 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 (54138173) 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, 2082248 + ... + 2082273.

It is an arithmetic number, because the mean of its divisors is an integer number (14575827).

Almost surely, 2^54138773 is an apocalyptic number.

It is an amenable number.

54138773 is a deficient number, since it is larger than the sum of its proper divisors (4164535).

54138773 is a wasteful number, since it uses less digits than its factorization.

54138773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164534.

The product of its digits is 70560, while the sum is 38.

The square root of 54138773 is about 7357.9054764247. The cubic root of 54138773 is about 378.2998213809.

The spelling of 54138773 in words is "fifty-four million, one hundred thirty-eight thousand, seven hundred seventy-three".