55743839 has 2 divisors, whose sum is σ = 55743840. Its totient is φ = 55743838.

The previous prime is 55743827. The next prime is 55743841. The reversal of 55743839 is 93834755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55743839 - 2⁴ = 55743823 is a prime.

Together with 55743841, it forms a pair of twin primes.

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 55743839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55743869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27871919 + 27871920.

It is an arithmetic number, because the mean of its divisors is an integer number (27871920).

Almost surely, 2^55743839 is an apocalyptic number.

55743839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55743839 is an equidigital number, since it uses as much as digits as its factorization.

55743839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 55743839 is about 7466.1796790594. The cubic root of 55743839 is about 382.0019896098.

The spelling of 55743839 in words is "fifty-five million, seven hundred forty-three thousand, eight hundred thirty-nine".