55749 has 4 divisors (see below), whose sum is σ = 74336. Its totient is φ = 37164.

The previous prime is 55733. The next prime is 55763. The reversal of 55749 is 94755.

55749 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55749 - 2⁴ = 55733 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55799) 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, 9289 + ... + 9294.

It is an arithmetic number, because the mean of its divisors is an integer number (18584).

2⁵⁵⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

55749 is a deficient number, since it is larger than the sum of its proper divisors (18587).

55749 is a wasteful number, since it uses less digits than its factorization.

55749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18586.

The product of its digits is 6300, while the sum is 30.

The square root of 55749 is about 236.1122614351. The cubic root of 55749 is about 38.2013778365.

It can be divided in two parts, 557 and 49, that added together give a palindrome (606).

The spelling of 55749 in words is "fifty-five thousand, seven hundred forty-nine".