71148091 has 8 divisors (see below), whose sum is σ = 81496800. Its totient is φ = 60845568.

The previous prime is 71148059. The next prime is 71148097. The reversal of 71148091 is 19084117.

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

It is not a de Polignac number, because 71148091 - 2⁵ = 71148059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71148097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8176 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (10187100).

Almost surely, 2^71148091 is an apocalyptic number.

71148091 is a deficient number, since it is larger than the sum of its proper divisors (10348709).

71148091 is a wasteful number, since it uses less digits than its factorization.

71148091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23093.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 71148091 is about 8434.9327798151. The cubic root of 71148091 is about 414.3694707109.

The spelling of 71148091 in words is "seventy-one million, one hundred forty-eight thousand, ninety-one".