70081171 has 4 divisors (see below), whose sum is σ = 70191144. Its totient is φ = 69971200.

The previous prime is 70081163. The next prime is 70081199. The reversal of 70081171 is 17118007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17118007 = 607 ⋅28201.

It is a cyclic number.

It is not a de Polignac number, because 70081171 - 2³ = 70081163 is a prime.

It is a super-2 number, since 2×70081171² = 9822741057462482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70081771) 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 3 ways as a sum of consecutive naturals, for example, 54025 + ... + 55306.

It is an arithmetic number, because the mean of its divisors is an integer number (17547786).

Almost surely, 2^70081171 is an apocalyptic number.

70081171 is a deficient number, since it is larger than the sum of its proper divisors (109973).

70081171 is a wasteful number, since it uses less digits than its factorization.

70081171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109972.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 70081171 is about 8371.4497549708. The cubic root of 70081171 is about 412.2877678986.

Adding to 70081171 its reverse (17118007), we get a palindrome (87199178).

The spelling of 70081171 in words is "seventy million, eighty-one thousand, one hundred seventy-one".