55081847 has 2 divisors, whose sum is σ = 55081848. Its totient is φ = 55081846.

The previous prime is 55081843. The next prime is 55081861. The reversal of 55081847 is 74818055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55081847 - 2² = 55081843 is a prime.

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 55081847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55081843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27540923 + 27540924.

It is an arithmetic number, because the mean of its divisors is an integer number (27540924).

Almost surely, 2^55081847 is an apocalyptic number.

55081847 is a deficient number, since it is larger than the sum of its proper divisors (1).

55081847 is an equidigital number, since it uses as much as digits as its factorization.

55081847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 55081847 is about 7421.7145593185. The cubic root of 55081847 is about 380.4837951545.

The spelling of 55081847 in words is "fifty-five million, eighty-one thousand, eight hundred forty-seven".