71533516 has 6 divisors (see below), whose sum is σ = 125183660. Its totient is φ = 35766756.

The previous prime is 71533513. The next prime is 71533531. The reversal of 71533516 is 61533517.

It is a super-2 number, since 2×71533516² = 10234087822644512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71533513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8941686 + ... + 8941693.

Almost surely, 2^71533516 is an apocalyptic number.

It is an amenable number.

71533516 is a deficient number, since it is larger than the sum of its proper divisors (53650144).

71533516 is a wasteful number, since it uses less digits than its factorization.

71533516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17883383 (or 17883381 counting only the distinct ones).

The product of its digits is 9450, while the sum is 31.

The square root of 71533516 is about 8457.7488730749. The cubic root of 71533516 is about 415.1163674252.

Subtracting from 71533516 its reverse (61533517), we obtain a palindrome (9999999).

The spelling of 71533516 in words is "seventy-one million, five hundred thirty-three thousand, five hundred sixteen".