52239937 has 2 divisors, whose sum is σ = 52239938. Its totient is φ = 52239936.

The previous prime is 52239931. The next prime is 52239989. The reversal of 52239937 is 73993225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28901376 + 23338561 = 5376^2 + 4831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52239937 is a prime.

It is a super-2 number, since 2×52239937² = 5458022035527938, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52239937.

It is not a weakly prime, because it can be changed into another prime (52239931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26119968 + 26119969.

It is an arithmetic number, because the mean of its divisors is an integer number (26119969).

Almost surely, 2^52239937 is an apocalyptic number.

It is an amenable number.

52239937 is a deficient number, since it is larger than the sum of its proper divisors (1).

52239937 is an equidigital number, since it uses as much as digits as its factorization.

52239937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 52239937 is about 7227.7200416176. The cubic root of 52239937 is about 373.8243167170.

The spelling of 52239937 in words is "fifty-two million, two hundred thirty-nine thousand, nine hundred thirty-seven".