9145172 has 6 divisors (see below), whose sum is σ = 16004058. Its totient is φ = 4572584.

The previous prime is 9145163. The next prime is 9145187. The reversal of 9145172 is 2715419.

It can be written as a sum of positive squares in only one way, i.e., 8561476 + 583696 = 2926^2 + 764^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143143 + ... + 1143150.

It is an arithmetic number, because the mean of its divisors is an integer number (2667343).

Almost surely, 2^9145172 is an apocalyptic number.

It is an amenable number.

9145172 is a deficient number, since it is larger than the sum of its proper divisors (6858886).

9145172 is a wasteful number, since it uses less digits than its factorization.

9145172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286297 (or 2286295 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 9145172 is about 3024.0985433679. The cubic root of 9145172 is about 209.1208293781.

The spelling of 9145172 in words is "nine million, one hundred forty-five thousand, one hundred seventy-two".