52381237 has 4 divisors (see below), whose sum is σ = 52396300. Its totient is φ = 52366176.

The previous prime is 52381229. The next prime is 52381247. The reversal of 52381237 is 73218325.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33074001 + 19307236 = 5751^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 52381237 - 2³ = 52381229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52381199 and 52381208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52381207) 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, 643 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (13099075).

Almost surely, 2^52381237 is an apocalyptic number.

It is an amenable number.

52381237 is a deficient number, since it is larger than the sum of its proper divisors (15063).

52381237 is an equidigital number, since it uses as much as digits as its factorization.

52381237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15062.

The product of its digits is 10080, while the sum is 31.

The square root of 52381237 is about 7237.4883074172. The cubic root of 52381237 is about 374.1610566787.

The spelling of 52381237 in words is "fifty-two million, three hundred eighty-one thousand, two hundred thirty-seven".