52568281 has 4 divisors (see below), whose sum is σ = 54264064. Its totient is φ = 50872500.

The previous prime is 52568261. The next prime is 52568287. The reversal of 52568281 is 18286525.

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 52568281 - 2¹³ = 52560089 is a prime.

It is a super-2 number, since 2×52568281² = 5526848334589922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 52568281.

It is not an unprimeable number, because it can be changed into a prime (52568287) 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, 847845 + ... + 847906.

It is an arithmetic number, because the mean of its divisors is an integer number (13566016).

Almost surely, 2^52568281 is an apocalyptic number.

It is an amenable number.

52568281 is a deficient number, since it is larger than the sum of its proper divisors (1695783).

52568281 is a wasteful number, since it uses less digits than its factorization.

52568281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695782.

The product of its digits is 38400, while the sum is 37.

The square root of 52568281 is about 7250.3986786935. The cubic root of 52568281 is about 374.6058816374.

The spelling of 52568281 in words is "fifty-two million, five hundred sixty-eight thousand, two hundred eighty-one".