58821 has 8 divisors (see below), whose sum is σ = 89664. Its totient is φ = 33600.

The previous prime is 58789. The next prime is 58831. The reversal of 58821 is 12885.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 58821 - 2⁵ = 58789 is a prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 58791 and 58800.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 58821.

It is not an unprimeable number, because it can be changed into a prime (58831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (11208).

2⁵⁸⁸²¹ is an apocalyptic number.

It is an amenable number.

58821 is a deficient number, since it is larger than the sum of its proper divisors (30843).

58821 is a wasteful number, since it uses less digits than its factorization.

58821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811.

The product of its digits is 640, while the sum is 24.

The square root of 58821 is about 242.5304104643. The cubic root of 58821 is about 38.8905544260.

The spelling of 58821 in words is "fifty-eight thousand, eight hundred twenty-one".