155054227 has 2 divisors, whose sum is σ = 155054228. Its totient is φ = 155054226.

The previous prime is 155054189. The next prime is 155054311. The reversal of 155054227 is 722450551.

It is a weak prime.

It is an emirp because it is prime and its reverse (722450551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155054227 - 2⁷ = 155054099 is a prime.

It is not a weakly prime, because it can be changed into another prime (155055227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77527113 + 77527114.

It is an arithmetic number, because the mean of its divisors is an integer number (77527114).

Almost surely, 2^155054227 is an apocalyptic number.

155054227 is a deficient number, since it is larger than the sum of its proper divisors (1).

155054227 is an equidigital number, since it uses as much as digits as its factorization.

155054227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 155054227 is about 12452.0772162720. The cubic root of 155054227 is about 537.2311712835.

The spelling of 155054227 in words is "one hundred fifty-five million, fifty-four thousand, two hundred twenty-seven".