172270971 has 12 divisors (see below), whose sum is σ = 254905560. Its totient is φ = 112045920.

The previous prime is 172270949. The next prime is 172270997. The reversal of 172270971 is 179072271.

172270971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172270971 - 2⁵ = 172270939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172270171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233061 + ... + 233798.

It is an arithmetic number, because the mean of its divisors is an integer number (21242130).

Almost surely, 2^172270971 is an apocalyptic number.

172270971 is a deficient number, since it is larger than the sum of its proper divisors (82634589).

172270971 is a wasteful number, since it uses less digits than its factorization.

172270971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466906 (or 466903 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The square root of 172270971 is about 13125.2036555628. The cubic root of 172270971 is about 556.4216680771.

The spelling of 172270971 in words is "one hundred seventy-two million, two hundred seventy thousand, nine hundred seventy-one".