5855727221 has 2 divisors, whose sum is σ = 5855727222. Its totient is φ = 5855727220.

The previous prime is 5855727203. The next prime is 5855727223. The reversal of 5855727221 is 1227275585.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5623500100 + 232227121 = 74990^2 + 15239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5855727221 is a prime.

Together with 5855727223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5855727223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2927863610 + 2927863611.

It is an arithmetic number, because the mean of its divisors is an integer number (2927863611).

Almost surely, 2^5855727221 is an apocalyptic number.

It is an amenable number.

5855727221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5855727221 is an equidigital number, since it uses as much as digits as its factorization.

5855727221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392000, while the sum is 44.

The square root of 5855727221 is about 76522.7235597375. The cubic root of 5855727221 is about 1802.4377691188.

The spelling of 5855727221 in words is "five billion, eight hundred fifty-five million, seven hundred twenty-seven thousand, two hundred twenty-one".