145115227 has 2 divisors, whose sum is σ = 145115228. Its totient is φ = 145115226.

The previous prime is 145115209. The next prime is 145115231. The reversal of 145115227 is 722511541.

It is a strong prime.

It is an emirp because it is prime and its reverse (722511541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145115227 - 2¹¹ = 145113179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145115195 and 145115204.

It is not a weakly prime, because it can be changed into another prime (145115207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72557613 + 72557614.

It is an arithmetic number, because the mean of its divisors is an integer number (72557614).

Almost surely, 2^145115227 is an apocalyptic number.

145115227 is a deficient number, since it is larger than the sum of its proper divisors (1).

145115227 is an equidigital number, since it uses as much as digits as its factorization.

145115227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 28.

The square root of 145115227 is about 12046.3781693918. The cubic root of 145115227 is about 525.4979125109.

Adding to 145115227 its reverse (722511541), we get a palindrome (867626768).

The spelling of 145115227 in words is "one hundred forty-five million, one hundred fifteen thousand, two hundred twenty-seven".