71872159 has 4 divisors (see below), whose sum is σ = 72072720. Its totient is φ = 71671600.

The previous prime is 71872153. The next prime is 71872169. The reversal of 71872159 is 95127817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95127817 = 541 ⋅175837.

It is a cyclic number.

It is not a de Polignac number, because 71872159 - 2⁵ = 71872127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71872153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99742 + ... + 100459.

It is an arithmetic number, because the mean of its divisors is an integer number (18018180).

Almost surely, 2^71872159 is an apocalyptic number.

71872159 is a deficient number, since it is larger than the sum of its proper divisors (200561).

71872159 is a wasteful number, since it uses less digits than its factorization.

71872159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200560.

The product of its digits is 35280, while the sum is 40.

The square root of 71872159 is about 8477.7449242119. The cubic root of 71872159 is about 415.7703965197.

The spelling of 71872159 in words is "seventy-one million, eight hundred seventy-two thousand, one hundred fifty-nine".