52236809 has 2 divisors, whose sum is σ = 52236810. Its totient is φ = 52236808.

The previous prime is 52236763. The next prime is 52236857. The reversal of 52236809 is 90863225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 2393209 = 7060^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 52236809 - 2²⁰ = 51188233 is a prime.

It is not a weakly prime, because it can be changed into another prime (52226809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26118404 + 26118405.

It is an arithmetic number, because the mean of its divisors is an integer number (26118405).

Almost surely, 2^52236809 is an apocalyptic number.

It is an amenable number.

52236809 is a deficient number, since it is larger than the sum of its proper divisors (1).

52236809 is an equidigital number, since it uses as much as digits as its factorization.

52236809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 52236809 is about 7227.5036492554. The cubic root of 52236809 is about 373.8168553387.

The spelling of 52236809 in words is "fifty-two million, two hundred thirty-six thousand, eight hundred nine".