145115224 has 8 divisors (see below), whose sum is σ = 272091060. Its totient is φ = 72557608.

The previous prime is 145115209. The next prime is 145115227. The reversal of 145115224 is 422511541.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145115227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9069694 + ... + 9069709.

Almost surely, 2^145115224 is an apocalyptic number.

It is an amenable number.

145115224 is a deficient number, since it is larger than the sum of its proper divisors (126975836).

145115224 is a wasteful number, since it uses less digits than its factorization.

145115224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18139409 (or 18139405 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 145115224 is about 12046.3780448731. The cubic root of 145115224 is about 525.4979088897.

Adding to 145115224 its reverse (422511541), we get a palindrome (567626765).

The spelling of 145115224 in words is "one hundred forty-five million, one hundred fifteen thousand, two hundred twenty-four".