72152171 has 8 divisors (see below), whose sum is σ = 88802784. Its totient is φ = 57087360.

The previous prime is 72152167. The next prime is 72152231. The reversal of 72152171 is 17125127.

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 72152171 - 2² = 72152167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72152171.

It is not an unprimeable number, because it can be changed into a prime (72142171) 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, 396350 + ... + 396531.

It is an arithmetic number, because the mean of its divisors is an integer number (11100348).

Almost surely, 2^72152171 is an apocalyptic number.

72152171 is a deficient number, since it is larger than the sum of its proper divisors (16650613).

72152171 is a wasteful number, since it uses less digits than its factorization.

72152171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792901.

The product of its digits is 980, while the sum is 26.

The square root of 72152171 is about 8494.2434036234. The cubic root of 72152171 is about 416.3096402623.

Adding to 72152171 its reverse (17125127), we get a palindrome (89277298).

The spelling of 72152171 in words is "seventy-two million, one hundred fifty-two thousand, one hundred seventy-one".