52139 has 4 divisors (see below), whose sum is σ = 55224. Its totient is φ = 49056.

The previous prime is 52127. The next prime is 52147. The reversal of 52139 is 93125.

52139 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52139.

It is not an unprimeable number, because it can be changed into a prime (52189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (13806).

2⁵²¹³⁹ is an apocalyptic number.

52139 is a deficient number, since it is larger than the sum of its proper divisors (3085).

52139 is a wasteful number, since it uses less digits than its factorization.

52139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its digits is 270, while the sum is 20.

The square root of 52139 is about 228.3396592798. The cubic root of 52139 is about 37.3583396102.

It can be divided in two parts, 52 and 139, that added together give a palindrome (191).

The spelling of 52139 in words is "fifty-two thousand, one hundred thirty-nine".