55493 has 4 divisors (see below), whose sum is σ = 55968. Its totient is φ = 55020.

The previous prime is 55487. The next prime is 55501. The reversal of 55493 is 39455.

55493 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55493 - 2¹⁰ = 54469 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 (55793) 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, 80 + ... + 342.

It is an arithmetic number, because the mean of its divisors is an integer number (13992).

2⁵⁵⁴⁹³ is an apocalyptic number.

It is an amenable number.

55493 is a deficient number, since it is larger than the sum of its proper divisors (475).

55493 is a wasteful number, since it uses less digits than its factorization.

55493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its digits is 2700, while the sum is 26.

The square root of 55493 is about 235.5695226467. The cubic root of 55493 is about 38.1428143926.

The spelling of 55493 in words is "fifty-five thousand, four hundred ninety-three".