52445 has 8 divisors (see below), whose sum is σ = 66744. Its totient is φ = 39424.

The previous prime is 52433. The next prime is 52453. The reversal of 52445 is 54425.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 51076 = 37^2 + 226^2 .

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 52445 - 2⁸ = 52189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 393.

It is an arithmetic number, because the mean of its divisors is an integer number (8343).

2⁵²⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

52445 is a deficient number, since it is larger than the sum of its proper divisors (14299).

52445 is a wasteful number, since it uses less digits than its factorization.

52445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 800, while the sum is 20.

The square root of 52445 is about 229.0087334579. The cubic root of 52445 is about 37.4312815583.

Subtracting from 52445 its sum of digits (20), we obtain a palindrome (52425).

The spelling of 52445 in words is "fifty-two thousand, four hundred forty-five".