52165609 has 2 divisors, whose sum is σ = 52165610. Its totient is φ = 52165608.

The previous prime is 52165573. The next prime is 52165637. The reversal of 52165609 is 90656125.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50808384 + 1357225 = 7128^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 52165609 - 2⁹ = 52165097 is a prime.

It is not a weakly prime, because it can be changed into another prime (52165649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26082804 + 26082805.

It is an arithmetic number, because the mean of its divisors is an integer number (26082805).

Almost surely, 2^52165609 is an apocalyptic number.

It is an amenable number.

52165609 is a deficient number, since it is larger than the sum of its proper divisors (1).

52165609 is an equidigital number, since it uses as much as digits as its factorization.

52165609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 52165609 is about 7222.5763408911. The cubic root of 52165609 is about 373.6469377243.

The spelling of 52165609 in words is "fifty-two million, one hundred sixty-five thousand, six hundred nine".