172152011 has 8 divisors (see below), whose sum is σ = 176529360. Its totient is φ = 167827968.

The previous prime is 172152007. The next prime is 172152017. The reversal of 172152011 is 110251271.

It is a happy number.

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 172152011 - 2² = 172152007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172152017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6746 + ... + 19743.

It is an arithmetic number, because the mean of its divisors is an integer number (22066170).

Almost surely, 2^172152011 is an apocalyptic number.

172152011 is a deficient number, since it is larger than the sum of its proper divisors (4377349).

172152011 is an equidigital number, since it uses as much as digits as its factorization.

172152011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26653.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 172152011 is about 13120.6711337492. The cubic root of 172152011 is about 556.2935614414.

The spelling of 172152011 in words is "one hundred seventy-two million, one hundred fifty-two thousand, eleven".