172159139 has 6 divisors (see below), whose sum is σ = 172839660. Its totient is φ = 171480320.

The previous prime is 172159129. The next prime is 172159199. The reversal of 172159139 is 931951271.

It is a de Polignac number, because none of the positive numbers 2^k-172159139 is a prime.

It is a Duffinian number.

172159139 is a Rhonda number in base 10.

Its product of digits (17010) is a multiple of the sum of its prime factors (1701).

It is not an unprimeable number, because it can be changed into a prime (172159129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268259 + ... + 268899.

It is an arithmetic number, because the mean of its divisors is an integer number (28806610).

Almost surely, 2^172159139 is an apocalyptic number.

172159139 is a deficient number, since it is larger than the sum of its proper divisors (680521).

172159139 is an frugal number, since it uses more digits than its factorization.

172159139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701 (or 1060 counting only the distinct ones).

The product of its digits is 17010, while the sum is 38.

The square root of 172159139 is about 13120.9427633840. The cubic root of 172159139 is about 556.3012391633.

The spelling of 172159139 in words is "one hundred seventy-two million, one hundred fifty-nine thousand, one hundred thirty-nine".