145552172 has 6 divisors (see below), whose sum is σ = 254716308. Its totient is φ = 72776084.

The previous prime is 145552163. The next prime is 145552193. The reversal of 145552172 is 271255541.

145552172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18194018 + ... + 18194025.

It is an arithmetic number, because the mean of its divisors is an integer number (42452718).

Almost surely, 2^145552172 is an apocalyptic number.

It is an amenable number.

145552172 is a deficient number, since it is larger than the sum of its proper divisors (109164136).

145552172 is a wasteful number, since it uses less digits than its factorization.

145552172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36388047 (or 36388045 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 145552172 is about 12064.5004869659. The cubic root of 145552172 is about 526.0248124503.

The spelling of 145552172 in words is "one hundred forty-five million, five hundred fifty-two thousand, one hundred seventy-two".