172520086 has 8 divisors (see below), whose sum is σ = 258938064. Its totient is φ = 86207400.

The previous prime is 172520041. The next prime is 172520093. The reversal of 172520086 is 680025271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22090 + ... + 28861.

It is an arithmetic number, because the mean of its divisors is an integer number (32367258).

Almost surely, 2^172520086 is an apocalyptic number.

172520086 is a deficient number, since it is larger than the sum of its proper divisors (86417978).

172520086 is a wasteful number, since it uses less digits than its factorization.

172520086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52646.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 172520086 is about 13134.6901752573. The cubic root of 172520086 is about 556.6897461756.

The spelling of 172520086 in words is "one hundred seventy-two million, five hundred twenty thousand, eighty-six".