52809290 has 16 divisors (see below), whose sum is σ = 98335080. Its totient is φ = 20395200.

The previous prime is 52809277. The next prime is 52809313. The reversal of 52809290 is 9290825.

52809290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 7267²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 52085089 + 724201 = 7217^2 + 851^2 .

It is a super-2 number, since 2×52809290² = 5577642220608200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52809290.

It is an unprimeable number.

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, 90761 + ... + 91340.

Almost surely, 2^52809290 is an apocalyptic number.

52809290 is a deficient number, since it is larger than the sum of its proper divisors (45525790).

52809290 is a wasteful number, since it uses less digits than its factorization.

52809290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182137.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 52809290 is about 7267.0000688042. Note that the first 4 decimals coincide. The cubic root of 52809290 is about 375.1774922737.

The spelling of 52809290 in words is "fifty-two million, eight hundred nine thousand, two hundred ninety".