172372671 has 8 divisors (see below), whose sum is σ = 255366960. Its totient is φ = 114915096.

The previous prime is 172372661. The next prime is 172372699. The reversal of 172372671 is 176273271.

It is not a de Polignac number, because 172372671 - 2¹⁷ = 172241599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172372601) 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, 3192060 + ... + 3192113.

It is an arithmetic number, because the mean of its divisors is an integer number (31920870).

Almost surely, 2^172372671 is an apocalyptic number.

172372671 is a deficient number, since it is larger than the sum of its proper divisors (82994289).

172372671 is an equidigital number, since it uses as much as digits as its factorization.

172372671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384182 (or 6384176 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 172372671 is about 13129.0773095446. The cubic root of 172372671 is about 556.5311408675.

The spelling of 172372671 in words is "one hundred seventy-two million, three hundred seventy-two thousand, six hundred seventy-one".