53812439 has 2 divisors, whose sum is σ = 53812440. Its totient is φ = 53812438.

The previous prime is 53812417. The next prime is 53812441. The reversal of 53812439 is 93421835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53812439 is a prime.

It is a super-2 number, since 2×53812439² = 5791557182257442, which contains 22 as substring.

Together with 53812441, 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 = 53812399 and 53812408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53812489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26906219 + 26906220.

It is an arithmetic number, because the mean of its divisors is an integer number (26906220).

Almost surely, 2^53812439 is an apocalyptic number.

53812439 is a deficient number, since it is larger than the sum of its proper divisors (1).

53812439 is an equidigital number, since it uses as much as digits as its factorization.

53812439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 53812439 is about 7335.6962178105. The cubic root of 53812439 is about 377.5381924138.

The spelling of 53812439 in words is "fifty-three million, eight hundred twelve thousand, four hundred thirty-nine".