172671147 has 24 divisors (see below), whose sum is σ = 280869888. Its totient is φ = 101271600.

The previous prime is 172671113. The next prime is 172671167. The reversal of 172671147 is 741176271.

It is not a de Polignac number, because 172671147 - 2¹⁴ = 172654763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172671167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25063 + ... + 31200.

It is an arithmetic number, because the mean of its divisors is an integer number (11702912).

Almost surely, 2^172671147 is an apocalyptic number.

172671147 is a deficient number, since it is larger than the sum of its proper divisors (108198741).

172671147 is a wasteful number, since it uses less digits than its factorization.

172671147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56311 (or 56308 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 172671147 is about 13140.4393762157. The cubic root of 172671147 is about 556.8521805506.

The spelling of 172671147 in words is "one hundred seventy-two million, six hundred seventy-one thousand, one hundred forty-seven".