52281561 has 8 divisors (see below), whose sum is σ = 69750720. Its totient is φ = 34833392.

The previous prime is 52281527. The next prime is 52281569. The reversal of 52281561 is 16518225.

52281561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52281561 - 2¹⁰ = 52280537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52281569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (8718840).

Almost surely, 2^52281561 is an apocalyptic number.

It is an amenable number.

52281561 is a deficient number, since it is larger than the sum of its proper divisors (17469159).

52281561 is a wasteful number, since it uses less digits than its factorization.

52281561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10495.

The product of its digits is 4800, while the sum is 30.

The square root of 52281561 is about 7230.5989378474. The cubic root of 52281561 is about 373.9235762325.

Adding to 52281561 its reverse (16518225), we get a palindrome (68799786).

The spelling of 52281561 in words is "fifty-two million, two hundred eighty-one thousand, five hundred sixty-one".