172271206 has 4 divisors (see below), whose sum is σ = 258406812. Its totient is φ = 86135602.

The previous prime is 172271153. The next prime is 172271207. The reversal of 172271206 is 602172271.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172271207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43067800 + ... + 43067803.

It is an arithmetic number, because the mean of its divisors is an integer number (64601703).

Almost surely, 2^172271206 is an apocalyptic number.

172271206 is a deficient number, since it is larger than the sum of its proper divisors (86135606).

172271206 is an equidigital number, since it uses as much as digits as its factorization.

172271206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86135605.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 172271206 is about 13125.2126078018. The cubic root of 172271206 is about 556.4219210874.

The spelling of 172271206 in words is "one hundred seventy-two million, two hundred seventy-one thousand, two hundred six".