145566227 has 2 divisors, whose sum is σ = 145566228. Its totient is φ = 145566226.

The previous prime is 145566217. The next prime is 145566229. The reversal of 145566227 is 722665541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145566227 - 2²⁰ = 144517651 is a prime.

Together with 145566229, 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 (145566229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72783113 + 72783114.

It is an arithmetic number, because the mean of its divisors is an integer number (72783114).

Almost surely, 2^145566227 is an apocalyptic number.

145566227 is a deficient number, since it is larger than the sum of its proper divisors (1).

145566227 is an equidigital number, since it uses as much as digits as its factorization.

145566227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 145566227 is about 12065.0829669754. The cubic root of 145566227 is about 526.0417434716.

The spelling of 145566227 in words is "one hundred forty-five million, five hundred sixty-six thousand, two hundred twenty-seven".