52391 has 2 divisors, whose sum is σ = 52392.
Its totient is φ = 52390.
The previous prime is 52387. The next prime is 52433. The reversal of 52391 is 19325.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 52391 - 22 = 52387 is a prime.
It is a nialpdrome in base 16.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (52301) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26195 + 26196.
It is an arithmetic number, because the mean of its divisors is an integer number (26196).
252391 is an apocalyptic number.
52391 is a deficient number, since it is larger than the sum of its proper divisors (1).
52391 is an equidigital number, since it uses as much as digits as its factorization.
52391 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 270, while the sum is 20.
The square root of 52391 is about 228.8908036597.
The cubic root of 52391 is about 37.4184301055.
The spelling of 52391 in words is "fifty-two thousand, three hundred ninety-one".