71202891 has 4 divisors (see below), whose sum is σ = 94937192. Its totient is φ = 47468592.

The previous prime is 71202881. The next prime is 71202907. The reversal of 71202891 is 19820217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19820217 = 3 ⋅6606739.

It is not a de Polignac number, because 71202891 - 2⁹ = 71202379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71202881) 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, 11867146 + ... + 11867151.

It is an arithmetic number, because the mean of its divisors is an integer number (23734298).

Almost surely, 2^71202891 is an apocalyptic number.

71202891 is a deficient number, since it is larger than the sum of its proper divisors (23734301).

71202891 is a wasteful number, since it uses less digits than its factorization.

71202891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23734300.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 71202891 is about 8438.1805503319. The cubic root of 71202891 is about 414.4758292429.

It can be divided in two parts, 7120 and 2891, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 71202891 in words is "seventy-one million, two hundred two thousand, eight hundred ninety-one".