55257227 has 2 divisors, whose sum is σ = 55257228. Its totient is φ = 55257226.

The previous prime is 55257179. The next prime is 55257229. The reversal of 55257227 is 72275255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55257227 - 2¹² = 55253131 is a prime.

It is a super-2 number, since 2×55257227² = 6106722271459058, which contains 22 as substring.

Together with 55257229, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55257229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628613 + 27628614.

It is an arithmetic number, because the mean of its divisors is an integer number (27628614).

Almost surely, 2^55257227 is an apocalyptic number.

55257227 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257227 is an equidigital number, since it uses as much as digits as its factorization.

55257227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49000, while the sum is 35.

The square root of 55257227 is about 7433.5204983911. The cubic root of 55257227 is about 380.8871860773.

The spelling of 55257227 in words is "fifty-five million, two hundred fifty-seven thousand, two hundred twenty-seven".