71533533 has 4 divisors (see below), whose sum is σ = 95378048. Its totient is φ = 47689020.

The previous prime is 71533531. The next prime is 71533549. The reversal of 71533533 is 33533517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71533533 - 2¹ = 71533531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71533533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71533531) 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, 11922253 + ... + 11922258.

It is an arithmetic number, because the mean of its divisors is an integer number (23844512).

Almost surely, 2^71533533 is an apocalyptic number.

It is an amenable number.

71533533 is a deficient number, since it is larger than the sum of its proper divisors (23844515).

71533533 is a wasteful number, since it uses less digits than its factorization.

71533533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23844514.

The product of its digits is 14175, while the sum is 30.

The square root of 71533533 is about 8457.7498780704. The cubic root of 71533533 is about 415.1164003094.

The spelling of 71533533 in words is "seventy-one million, five hundred thirty-three thousand, five hundred thirty-three".