52857237 has 4 divisors (see below), whose sum is σ = 70476320. Its totient is φ = 35238156.

The previous prime is 52857229. The next prime is 52857247. The reversal of 52857237 is 73275825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52857237 - 2³ = 52857229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52857195 and 52857204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52857247) 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, 8809537 + ... + 8809542.

It is an arithmetic number, because the mean of its divisors is an integer number (17619080).

Almost surely, 2^52857237 is an apocalyptic number.

It is an amenable number.

52857237 is a deficient number, since it is larger than the sum of its proper divisors (17619083).

52857237 is a wasteful number, since it uses less digits than its factorization.

52857237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17619082.

The product of its digits is 117600, while the sum is 39.

The square root of 52857237 is about 7270.2982744864. The cubic root of 52857237 is about 375.2910025660.

The spelling of 52857237 in words is "fifty-two million, eight hundred fifty-seven thousand, two hundred thirty-seven".