55622647 has 2 divisors, whose sum is σ = 55622648. Its totient is φ = 55622646.

The previous prime is 55622641. The next prime is 55622681. The reversal of 55622647 is 74622655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55622647 - 2¹⁹ = 55098359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55622641) 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, 27811323 + 27811324.

It is an arithmetic number, because the mean of its divisors is an integer number (27811324).

Almost surely, 2^55622647 is an apocalyptic number.

55622647 is a deficient number, since it is larger than the sum of its proper divisors (1).

55622647 is an equidigital number, since it uses as much as digits as its factorization.

55622647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 37.

The square root of 55622647 is about 7458.0591979415. The cubic root of 55622647 is about 381.7249534580.

The spelling of 55622647 in words is "fifty-five million, six hundred twenty-two thousand, six hundred forty-seven".