71173091 has 8 divisors (see below), whose sum is σ = 77760000. Its totient is φ = 64605640.

The previous prime is 71173079. The next prime is 71173093. The reversal of 71173091 is 19037117.

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

It is not a de Polignac number, because 71173091 - 2¹⁰ = 71172067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71173093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3410 + ... + 12408.

It is an arithmetic number, because the mean of its divisors is an integer number (9720000).

Almost surely, 2^71173091 is an apocalyptic number.

71173091 is a deficient number, since it is larger than the sum of its proper divisors (6586909).

71173091 is a wasteful number, since it uses less digits than its factorization.

71173091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 71173091 is about 8436.4145820366. The cubic root of 71173091 is about 414.4179987108.

The spelling of 71173091 in words is "seventy-one million, one hundred seventy-three thousand, ninety-one".