172645147 has 8 divisors (see below), whose sum is σ = 177016896. Its totient is φ = 168302592.

The previous prime is 172645141. The next prime is 172645163. The reversal of 172645147 is 741546271.

172645147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172645147 - 2¹¹ = 172643099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172645141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933 + ... + 19225.

It is an arithmetic number, because the mean of its divisors is an integer number (22127112).

Almost surely, 2^172645147 is an apocalyptic number.

172645147 is a deficient number, since it is larger than the sum of its proper divisors (4371749).

172645147 is a wasteful number, since it uses less digits than its factorization.

172645147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14597.

The product of its digits is 47040, while the sum is 37.

The square root of 172645147 is about 13139.4500265422. The cubic root of 172645147 is about 556.8242297634.

The spelling of 172645147 in words is "one hundred seventy-two million, six hundred forty-five thousand, one hundred forty-seven".