53247839 has 2 divisors, whose sum is σ = 53247840. Its totient is φ = 53247838.

The previous prime is 53247833. The next prime is 53247841. The reversal of 53247839 is 93874235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53247839 - 2¹⁶ = 53182303 is a prime.

Together with 53247841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53247796 and 53247805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53247833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26623919 + 26623920.

It is an arithmetic number, because the mean of its divisors is an integer number (26623920).

Almost surely, 2^53247839 is an apocalyptic number.

53247839 is a deficient number, since it is larger than the sum of its proper divisors (1).

53247839 is an equidigital number, since it uses as much as digits as its factorization.

53247839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 53247839 is about 7297.1116888807. Note that the first 3 decimals coincide. The cubic root of 53247839 is about 376.2131708634.

The spelling of 53247839 in words is "fifty-three million, two hundred forty-seven thousand, eight hundred thirty-nine".