52809289 has 15 divisors (see below), whose sum is σ = 58571313. Its totient is φ = 47613384.

The previous prime is 52809277. The next prime is 52809313. The reversal of 52809289 is 98290825.

The square root of 52809289 is 7267.

It is a perfect power (a square), and thus also a powerful number.

52809289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 26183689 + 26625600 = 5117^2 + 5160^2 .

It is not a de Polignac number, because 52809289 - 2⁵ = 52809257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52809389) 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 14 ways as a sum of consecutive naturals, for example, 1228102 + ... + 1228144.

Almost surely, 2^52809289 is an apocalyptic number.

52809289 is the 7267-th square number.

52809289 is the 3634-th centered octagonal number.

It is an amenable number.

52809289 is a deficient number, since it is larger than the sum of its proper divisors (5762024).

52809289 is an frugal number, since it uses more digits than its factorization.

52809289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The cubic root of 52809289 is about 375.1774899056.

Subtracting 52809289 from its reverse (98290825), we obtain a square (45481536 = 6744²).

The spelling of 52809289 in words is "fifty-two million, eight hundred nine thousand, two hundred eighty-nine".