55679 has 4 divisors (see below), whose sum is σ = 59976. Its totient is φ = 51384.

The previous prime is 55673. The next prime is 55681. The reversal of 55679 is 97655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97655 = 5 ⋅19531.

It is a cyclic number.

It is not a de Polignac number, because 55679 - 2⁴ = 55663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55673) 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, 2129 + ... + 2154.

It is an arithmetic number, because the mean of its divisors is an integer number (14994).

2⁵⁵⁶⁷⁹ is an apocalyptic number.

55679 is a deficient number, since it is larger than the sum of its proper divisors (4297).

55679 is a wasteful number, since it uses less digits than its factorization.

55679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296.

The product of its digits is 9450, while the sum is 32.

The square root of 55679 is about 235.9639803021. The cubic root of 55679 is about 38.1853822345.

The spelling of 55679 in words is "fifty-five thousand, six hundred seventy-nine".