52281585 has 32 divisors (see below), whose sum is σ = 94711680. Its totient is φ = 27353664.

The previous prime is 52281571. The next prime is 52281589. The reversal of 52281585 is 58518225.

52281585 is a `hidden beast` number, since 52 + 28 + 1 + 585 = 666.

52281585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52281585 - 2⁴ = 52281569 is a prime.

It is a super-2 number, since 2×52281585² = 5466728260224450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52281589) 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 31 ways as a sum of consecutive naturals, for example, 3502 + ... + 10808.

It is an arithmetic number, because the mean of its divisors is an integer number (2959740).

Almost surely, 2^52281585 is an apocalyptic number.

It is an amenable number.

52281585 is a deficient number, since it is larger than the sum of its proper divisors (42430095).

52281585 is a wasteful number, since it uses less digits than its factorization.

52281585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374 (or 7368 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 52281585 is about 7230.6005974608. The cubic root of 52281585 is about 373.9236334494.

The spelling of 52281585 in words is "fifty-two million, two hundred eighty-one thousand, five hundred eighty-five".