71533393 has 2 divisors, whose sum is σ = 71533394. Its totient is φ = 71533392.

The previous prime is 71533387. The next prime is 71533447. The reversal of 71533393 is 39333517.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71520849 + 12544 = 8457^2 + 112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71533393 is a prime.

It is not a weakly prime, because it can be changed into another prime (71533303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35766696 + 35766697.

It is an arithmetic number, because the mean of its divisors is an integer number (35766697).

Almost surely, 2^71533393 is an apocalyptic number.

It is an amenable number.

71533393 is a deficient number, since it is larger than the sum of its proper divisors (1).

71533393 is an equidigital number, since it uses as much as digits as its factorization.

71533393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 34.

The square root of 71533393 is about 8457.7416016334. The cubic root of 71533393 is about 415.1161294978.

The spelling of 71533393 in words is "seventy-one million, five hundred thirty-three thousand, three hundred ninety-three".