52755809 has 2 divisors, whose sum is σ = 52755810. Its totient is φ = 52755808.

The previous prime is 52755803. The next prime is 52755839. The reversal of 52755809 is 90855725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 1203409 = 7180^2 + 1097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52755809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52755803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26377904 + 26377905.

It is an arithmetic number, because the mean of its divisors is an integer number (26377905).

Almost surely, 2^52755809 is an apocalyptic number.

It is an amenable number.

52755809 is a deficient number, since it is larger than the sum of its proper divisors (1).

52755809 is an equidigital number, since it uses as much as digits as its factorization.

52755809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 52755809 is about 7263.3194202100. The cubic root of 52755809 is about 375.0507996366.

The spelling of 52755809 in words is "fifty-two million, seven hundred fifty-five thousand, eight hundred nine".