71133994 has 4 divisors (see below), whose sum is σ = 106700994. Its totient is φ = 35566996.

The previous prime is 71133989. The next prime is 71134027. The reversal of 71133994 is 49933117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49933117 = 13 ⋅3841009.

It can be written as a sum of positive squares in only one way, i.e., 56025225 + 15108769 = 7485^2 + 3887^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17783497 + ... + 17783500.

Almost surely, 2^71133994 is an apocalyptic number.

71133994 is a deficient number, since it is larger than the sum of its proper divisors (35567000).

71133994 is a wasteful number, since it uses less digits than its factorization.

71133994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35566999.

The product of its digits is 20412, while the sum is 37.

The square root of 71133994 is about 8434.0971063890. The cubic root of 71133994 is about 414.3421017298.

It can be divided in two parts, 71133 and 994, that added together give a palindrome (72127).

The spelling of 71133994 in words is "seventy-one million, one hundred thirty-three thousand, nine hundred ninety-four".