145223152 has 20 divisors (see below), whose sum is σ = 281763216. Its totient is φ = 72510080.

The previous prime is 145223149. The next prime is 145223179. The reversal of 145223152 is 251322541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6213 + ... + 18139.

Almost surely, 2^145223152 is an apocalyptic number.

It is an amenable number.

145223152 is a deficient number, since it is larger than the sum of its proper divisors (136540064).

145223152 is a wasteful number, since it uses less digits than its factorization.

145223152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696 (or 12690 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 145223152 is about 12050.8568989927. The cubic root of 145223152 is about 525.6281545476.

Adding to 145223152 its reverse (251322541), we get a palindrome (396545693).

The spelling of 145223152 in words is "one hundred forty-five million, two hundred twenty-three thousand, one hundred fifty-two".