54621 has 24 divisors (see below), whose sum is σ = 98240.
Its totient is φ = 29376.
The previous prime is 54617. The next prime is 54623. The reversal of 54621 is 12645.
It is a happy number.
54621 is nontrivially palindromic in base 16.
It is not a de Polignac number, because 54621 - 22 = 54617 is a prime.
It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.
It is a Duffinian number.
54621 is a lucky number.
It is a junction number, because it is equal to n+sod(n) for n = 54594 and 54603.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (54623) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3205 + ... + 3221.
254621 is an apocalyptic number.
54621 is a gapful number since it is divisible by the number (51) formed by its first and last digit.
It is an amenable number.
54621 is a deficient number, since it is larger than the sum of its proper divisors (43619).
54621 is a wasteful number, since it uses less digits than its factorization.
54621 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50 (or 27 counting only the distinct ones).
The product of its digits is 240, while the sum is 18.
The square root of 54621 is about 233.7113604427.
The cubic root of 54621 is about 37.9419705239.
The spelling of 54621 in words is "fifty-four thousand, six hundred twenty-one".