145732172 has 12 divisors (see below), whose sum is σ = 259212576. Its totient is φ = 71671440.

The previous prime is 145732141. The next prime is 145732189. The reversal of 145732172 is 271237541.

145732172 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 in 3 ways as a sum of consecutive naturals, for example, 298388 + ... + 298875.

It is an arithmetic number, because the mean of its divisors is an integer number (21601048).

Almost surely, 2^145732172 is an apocalyptic number.

It is an amenable number.

145732172 is a deficient number, since it is larger than the sum of its proper divisors (113480404).

145732172 is a wasteful number, since it uses less digits than its factorization.

145732172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597328 (or 597326 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 145732172 is about 12071.9580847516. The cubic root of 145732172 is about 526.2415628214.

The spelling of 145732172 in words is "one hundred forty-five million, seven hundred thirty-two thousand, one hundred seventy-two".