172051081 has 8 divisors (see below), whose sum is σ = 173721600. Its totient is φ = 170388960.

The previous prime is 172051079. The next prime is 172051123. The reversal of 172051081 is 180150271.

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 172051081 - 2¹ = 172051079 is a prime.

It is a super-2 number, since 2×172051081² = 59203148946537122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172051031) 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, 43765 + ... + 47533.

It is an arithmetic number, because the mean of its divisors is an integer number (21715200).

Almost surely, 2^172051081 is an apocalyptic number.

It is an amenable number.

172051081 is a deficient number, since it is larger than the sum of its proper divisors (1670519).

172051081 is a wasteful number, since it uses less digits than its factorization.

172051081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 172051081 is about 13116.8243489040. The cubic root of 172051081 is about 556.1848248176.

The spelling of 172051081 in words is "one hundred seventy-two million, fifty-one thousand, eighty-one".