71149133 has 16 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 62850480.

The previous prime is 71149087. The next prime is 71149157. The reversal of 71149133 is 33194117.

It is a happy number.

It is not a de Polignac number, because 71149133 - 2⁸ = 71148877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71149096 and 71149105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71149163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169598 + ... + 170016.

It is an arithmetic number, because the mean of its divisors is an integer number (4989600).

Almost surely, 2^71149133 is an apocalyptic number.

It is an amenable number.

71149133 is a deficient number, since it is larger than the sum of its proper divisors (8684467).

71149133 is a wasteful number, since it uses less digits than its factorization.

71149133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its digits is 2268, while the sum is 29.

The square root of 71149133 is about 8434.9945465305. The cubic root of 71149133 is about 414.3714935849.

The spelling of 71149133 in words is "seventy-one million, one hundred forty-nine thousand, one hundred thirty-three".