55622839 has 2 divisors, whose sum is σ = 55622840. Its totient is φ = 55622838.

The previous prime is 55622741. The next prime is 55622849. The reversal of 55622839 is 93822655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55622839 - 2⁹ = 55622327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55622849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27811419 + 27811420.

It is an arithmetic number, because the mean of its divisors is an integer number (27811420).

Almost surely, 2^55622839 is an apocalyptic number.

55622839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55622839 is an equidigital number, since it uses as much as digits as its factorization.

55622839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 55622839 is about 7458.0720699119. The cubic root of 55622839 is about 381.7253926742.

The spelling of 55622839 in words is "fifty-five million, six hundred twenty-two thousand, eight hundred thirty-nine".