52281161 has 4 divisors (see below), whose sum is σ = 53267652. Its totient is φ = 51294672.

The previous prime is 52281127. The next prime is 52281167. The reversal of 52281161 is 16118225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46308025 + 5973136 = 6805^2 + 2444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-52281161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52281161.

It is not an unprimeable number, because it can be changed into a prime (52281167) 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, 493166 + ... + 493271.

It is an arithmetic number, because the mean of its divisors is an integer number (13316913).

Almost surely, 2^52281161 is an apocalyptic number.

It is an amenable number.

52281161 is a deficient number, since it is larger than the sum of its proper divisors (986491).

52281161 is an equidigital number, since it uses as much as digits as its factorization.

52281161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986490.

The product of its digits is 960, while the sum is 26.

The square root of 52281161 is about 7230.5712775686. The cubic root of 52281161 is about 373.9226226152.

Adding to 52281161 its reverse (16118225), we get a palindrome (68399386).

The spelling of 52281161 in words is "fifty-two million, two hundred eighty-one thousand, one hundred sixty-one".