52552809 has 12 divisors (see below), whose sum is σ = 76763700. Its totient is φ = 34641024.

The previous prime is 52552793. The next prime is 52552811. The reversal of 52552809 is 90825525.

52552809 is a `hidden beast` number, since 525 + 52 + 80 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 22610025 = 5472^2 + 4755^2 .

It is not a de Polignac number, because 52552809 - 2⁴ = 52552793 is a prime.

It is a super-3 number, since 3×52552809³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (52552859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32004 + ... + 33605.

It is an arithmetic number, because the mean of its divisors is an integer number (6396975).

Almost surely, 2^52552809 is an apocalyptic number.

It is an amenable number.

52552809 is a deficient number, since it is larger than the sum of its proper divisors (24210891).

52552809 is a wasteful number, since it uses less digits than its factorization.

52552809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65704 (or 65701 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 52552809 is about 7249.3316243637. The cubic root of 52552809 is about 374.5691264509.

It can be divided in two parts, 52552 and 809, that added together give a square (53361 = 231²).

The spelling of 52552809 in words is "fifty-two million, five hundred fifty-two thousand, eight hundred nine".