145459172 has 12 divisors (see below), whose sum is σ = 259969920. Its totient is φ = 71182056.

The previous prime is 145459169. The next prime is 145459177. The reversal of 145459172 is 271954541.

145459172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145459177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386672 + ... + 387047.

It is an arithmetic number, because the mean of its divisors is an integer number (21664160).

Almost surely, 2^145459172 is an apocalyptic number.

It is an amenable number.

145459172 is a deficient number, since it is larger than the sum of its proper divisors (114510748).

145459172 is a wasteful number, since it uses less digits than its factorization.

145459172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773770 (or 773768 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 145459172 is about 12060.6455880272. The cubic root of 145459172 is about 525.9127547376.

The spelling of 145459172 in words is "one hundred forty-five million, four hundred fifty-nine thousand, one hundred seventy-two".