502172161 has 8 divisors (see below), whose sum is σ = 509118624. Its totient is φ = 495247200.

The previous prime is 502172123. The next prime is 502172171. The reversal of 502172161 is 161271205.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502172161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (502172171) 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, 44850 + ... + 54916.

It is an arithmetic number, because the mean of its divisors is an integer number (63639828).

Almost surely, 2^502172161 is an apocalyptic number.

It is an amenable number.

502172161 is a deficient number, since it is larger than the sum of its proper divisors (6946463).

502172161 is a wasteful number, since it uses less digits than its factorization.

502172161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 502172161 is about 22409.1981338021. The cubic root of 502172161 is about 794.8482291399.

The spelling of 502172161 in words is "five hundred two million, one hundred seventy-two thousand, one hundred sixty-one".