55568839 has 2 divisors, whose sum is σ = 55568840. Its totient is φ = 55568838.

The previous prime is 55568831. The next prime is 55568861. The reversal of 55568839 is 93886555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55568839 - 2³ = 55568831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55568792 and 55568801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55568831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27784419 + 27784420.

It is an arithmetic number, because the mean of its divisors is an integer number (27784420).

Almost surely, 2^55568839 is an apocalyptic number.

55568839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55568839 is an equidigital number, since it uses as much as digits as its factorization.

55568839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 49.

The square root of 55568839 is about 7454.4509522835. The cubic root of 55568839 is about 381.6018232570.

The spelling of 55568839 in words is "fifty-five million, five hundred sixty-eight thousand, eight hundred thirty-nine".