71833217 has 2 divisors, whose sum is σ = 71833218. Its totient is φ = 71833216.

The previous prime is 71833207. The next prime is 71833219. The reversal of 71833217 is 71233817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67502656 + 4330561 = 8216^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 71833217 - 2⁸ = 71832961 is a prime.

It is a super-2 number, since 2×71833217² = 10320022129138178, which contains 22 as substring.

Together with 71833219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71833219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35916608 + 35916609.

It is an arithmetic number, because the mean of its divisors is an integer number (35916609).

Almost surely, 2^71833217 is an apocalyptic number.

It is an amenable number.

71833217 is a deficient number, since it is larger than the sum of its proper divisors (1).

71833217 is an equidigital number, since it uses as much as digits as its factorization.

71833217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 71833217 is about 8475.4478937694. The cubic root of 71833217 is about 415.6952916108.

The spelling of 71833217 in words is "seventy-one million, eight hundred thirty-three thousand, two hundred seventeen".