52131389 has 8 divisors (see below), whose sum is σ = 53343360. Its totient is φ = 50933376.

The previous prime is 52131337. The next prime is 52131419. The reversal of 52131389 is 98313125.

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 52131389 - 2¹² = 52127293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52131329) 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, 4262 + ... + 11064.

It is an arithmetic number, because the mean of its divisors is an integer number (6667920).

Almost surely, 2^52131389 is an apocalyptic number.

It is an amenable number.

52131389 is a deficient number, since it is larger than the sum of its proper divisors (1211971).

52131389 is an equidigital number, since it uses as much as digits as its factorization.

52131389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979.

The product of its digits is 6480, while the sum is 32.

The square root of 52131389 is about 7220.2069914927. The cubic root of 52131389 is about 373.5652172490.

The spelling of 52131389 in words is "fifty-two million, one hundred thirty-one thousand, three hundred eighty-nine".