52390 has 24 divisors (see below), whose sum is σ = 105408.
Its totient is φ = 18720.
The previous prime is 52387. The next prime is 52391. The reversal of 52390 is 9325.
52390 = T3 + T4 + ... +
52390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Smith number, since the sum of its digits (19) coincides with the sum of the digits of its prime factors.
It is a nialpdrome in base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (52391) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1675 + ... + 1705.
It is an arithmetic number, because the mean of its divisors is an integer number (4392).
252390 is an apocalyptic number.
52390 is an abundant number, since it is smaller than the sum of its proper divisors (53018).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52704).
52390 is a wasteful number, since it uses less digits than its factorization.
52390 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 64 (or 51 counting only the distinct ones).
The product of its (nonzero) digits is 270, while the sum is 19.
The square root of 52390 is about 228.8886192016.
Note that the first 3 decimals coincide.
The cubic root of 52390 is about 37.4181920323.
The spelling of 52390 in words is "fifty-two thousand, three hundred ninety".