71533091 has 12 divisors (see below), whose sum is σ = 83391912. Its totient is φ = 61181568.

The previous prime is 71533087. The next prime is 71533117. The reversal of 71533091 is 19033517.

It is not a de Polignac number, because 71533091 - 2² = 71533087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71533001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26291 + ... + 28883.

It is an arithmetic number, because the mean of its divisors is an integer number (6949326).

Almost surely, 2^71533091 is an apocalyptic number.

71533091 is a deficient number, since it is larger than the sum of its proper divisors (11858821).

71533091 is a wasteful number, since it uses less digits than its factorization.

71533091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 71533091 is about 8457.7237481488. The cubic root of 71533091 is about 415.1155453173.

The spelling of 71533091 in words is "seventy-one million, five hundred thirty-three thousand, ninety-one".