71080851 has 4 divisors (see below), whose sum is σ = 94774472. Its totient is φ = 47387232.

The previous prime is 71080817. The next prime is 71080853. The reversal of 71080851 is 15808017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15808017 = 3 ⋅5269339.

It is not a de Polignac number, because 71080851 - 2¹¹ = 71078803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71080853) 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, 11846806 + ... + 11846811.

It is an arithmetic number, because the mean of its divisors is an integer number (23693618).

Almost surely, 2^71080851 is an apocalyptic number.

71080851 is a deficient number, since it is larger than the sum of its proper divisors (23693621).

71080851 is a wasteful number, since it uses less digits than its factorization.

71080851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23693620.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 71080851 is about 8430.9460323264. The cubic root of 71080851 is about 414.2388933724.

Adding to 71080851 its reverse (15808017), we get a palindrome (86888868).

The spelling of 71080851 in words is "seventy-one million, eighty thousand, eight hundred fifty-one".