52549439 has 2 divisors, whose sum is σ = 52549440. Its totient is φ = 52549438.

The previous prime is 52549429. The next prime is 52549463. The reversal of 52549439 is 93494525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52549439 - 2⁴ = 52549423 is a prime.

It is a super-2 number, since 2×52549439² = 5522887078429442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52549396 and 52549405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52549429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26274719 + 26274720.

It is an arithmetic number, because the mean of its divisors is an integer number (26274720).

Almost surely, 2^52549439 is an apocalyptic number.

52549439 is a deficient number, since it is larger than the sum of its proper divisors (1).

52549439 is an equidigital number, since it uses as much as digits as its factorization.

52549439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The square root of 52549439 is about 7249.0991854161. The cubic root of 52549439 is about 374.5611197432.

The spelling of 52549439 in words is "fifty-two million, five hundred forty-nine thousand, four hundred thirty-nine".