52164439 has 2 divisors, whose sum is σ = 52164440. Its totient is φ = 52164438.

The previous prime is 52164403. The next prime is 52164491. The reversal of 52164439 is 93446125.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52164439 - 2¹⁵ = 52131671 is a prime.

It is a super-2 number, since 2×52164439² = 5442257392369442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52164499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26082219 + 26082220.

It is an arithmetic number, because the mean of its divisors is an integer number (26082220).

Almost surely, 2^52164439 is an apocalyptic number.

52164439 is a deficient number, since it is larger than the sum of its proper divisors (1).

52164439 is an equidigital number, since it uses as much as digits as its factorization.

52164439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 52164439 is about 7222.4953444083. The cubic root of 52164439 is about 373.6441442480.

The spelling of 52164439 in words is "fifty-two million, one hundred sixty-four thousand, four hundred thirty-nine".