53206839 has 12 divisors (see below), whose sum is σ = 87833616. Its totient is φ = 30403872.

The previous prime is 53206789. The next prime is 53206847. The reversal of 53206839 is 93860235.

It is not a de Polignac number, because 53206839 - 2²⁰ = 52158263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53206639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422214 + ... + 422339.

It is an arithmetic number, because the mean of its divisors is an integer number (7319468).

Almost surely, 2^53206839 is an apocalyptic number.

53206839 is a deficient number, since it is larger than the sum of its proper divisors (34626777).

53206839 is a wasteful number, since it uses less digits than its factorization.

53206839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844566 (or 844563 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 53206839 is about 7294.3018171721. The cubic root of 53206839 is about 376.1165866581.

It can be divided in two parts, 53206 and 839, that added together give a palindrome (54045).

The spelling of 53206839 in words is "fifty-three million, two hundred six thousand, eight hundred thirty-nine".