52421 has 8 divisors (see below), whose sum is σ = 57600. Its totient is φ = 47520.

The previous prime is 52391. The next prime is 52433. The reversal of 52421 is 12425.

52421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 52421 - 2¹⁴ = 36037 is a prime.

It is a super-2 number, since 2×52421² = 5495922482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 52396 and 52405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021) 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, 545 + ... + 633.

It is an arithmetic number, because the mean of its divisors is an integer number (7200).

2⁵²⁴²¹ is an apocalyptic number.

It is an amenable number.

52421 is a deficient number, since it is larger than the sum of its proper divisors (5179).

52421 is a wasteful number, since it uses less digits than its factorization.

52421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139.

The product of its digits is 80, while the sum is 14.

The square root of 52421 is about 228.9563277134. The cubic root of 52421 is about 37.4255708911.

Adding to 52421 its reverse (12425), we get a palindrome (64846).

It can be divided in two parts, 524 and 21, that added together give a palindrome (545).

The spelling of 52421 in words is "fifty-two thousand, four hundred twenty-one".