52570321 has 4 divisors (see below), whose sum is σ = 55337200. Its totient is φ = 49803444.

The previous prime is 52570319. The next prime is 52570361. The reversal of 52570321 is 12307525.

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 a cyclic number.

It is not a de Polignac number, because 52570321 - 2¹ = 52570319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52570361) 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, 1383411 + ... + 1383448.

It is an arithmetic number, because the mean of its divisors is an integer number (13834300).

Almost surely, 2^52570321 is an apocalyptic number.

It is an amenable number.

52570321 is a deficient number, since it is larger than the sum of its proper divisors (2766879).

52570321 is a wasteful number, since it uses less digits than its factorization.

52570321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766878.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 52570321 is about 7250.5393592477. The cubic root of 52570321 is about 374.6107273105.

Adding to 52570321 its reverse (12307525), we get a palindrome (64877846).

The spelling of 52570321 in words is "fifty-two million, five hundred seventy thousand, three hundred twenty-one".