145152172 has 48 divisors (see below), whose sum is σ = 304416000. Its totient is φ = 59780160.

The previous prime is 145152167. The next prime is 145152173. The reversal of 145152172 is 271251541.

It is a self number, because there is not a number n which added to its sum of digits gives 145152172.

It is not an unprimeable number, because it can be changed into a prime (145152173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15454 + ... + 23002.

It is an arithmetic number, because the mean of its divisors is an integer number (6342000).

Almost surely, 2^145152172 is an apocalyptic number.

It is an amenable number.

145152172 is an abundant number, since it is smaller than the sum of its proper divisors (159263828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145152172 is a wasteful number, since it uses less digits than its factorization.

145152172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606 (or 7604 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 145152172 is about 12047.9115202594. The cubic root of 145152172 is about 525.5425043695.

The spelling of 145152172 in words is "one hundred forty-five million, one hundred fifty-two thousand, one hundred seventy-two".