54749 has 4 divisors (see below), whose sum is σ = 55836. Its totient is φ = 53664.

The previous prime is 54727. The next prime is 54751. The reversal of 54749 is 94745.

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 47524 + 7225 = 218^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 54749 - 2⁸ = 54493 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464 + ... + 569.

It is an arithmetic number, because the mean of its divisors is an integer number (13959).

2⁵⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

54749 is a deficient number, since it is larger than the sum of its proper divisors (1087).

54749 is a wasteful number, since it uses less digits than its factorization.

54749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its digits is 5040, while the sum is 29.

The square root of 54749 is about 233.9850422570. The cubic root of 54749 is about 37.9715854064.

The spelling of 54749 in words is "fifty-four thousand, seven hundred forty-nine".