172020207 has 8 divisors (see below), whose sum is σ = 229422384. Its totient is φ = 114649088.

The previous prime is 172020169. The next prime is 172020241. The reversal of 172020207 is 702020271.

172020207 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 172020207 - 2¹⁸ = 171758063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172020287) 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, 13423 + ... + 22895.

It is an arithmetic number, because the mean of its divisors is an integer number (28677798).

Almost surely, 2^172020207 is an apocalyptic number.

172020207 is a deficient number, since it is larger than the sum of its proper divisors (57402177).

172020207 is an equidigital number, since it uses as much as digits as its factorization.

172020207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15529.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 172020207 is about 13115.6474106313. The cubic root of 172020207 is about 556.1515543156.

Adding to 172020207 its reverse (702020271), we get a palindrome (874040478).

The spelling of 172020207 in words is "one hundred seventy-two million, twenty thousand, two hundred seven".