172722071 has 8 divisors (see below), whose sum is σ = 176185584. Its totient is φ = 169266240.

The previous prime is 172722041. The next prime is 172722097. The reversal of 172722071 is 170227271.

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 172722071 - 2⁶ = 172722007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172722001) 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, 68780 + ... + 71246.

It is an arithmetic number, because the mean of its divisors is an integer number (22023198).

Almost surely, 2^172722071 is an apocalyptic number.

172722071 is a deficient number, since it is larger than the sum of its proper divisors (3463513).

172722071 is a wasteful number, since it uses less digits than its factorization.

172722071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 172722071 is about 13142.3769159159. The cubic root of 172722071 is about 556.9069172639.

The spelling of 172722071 in words is "one hundred seventy-two million, seven hundred twenty-two thousand, seventy-one".