71552417 has 2 divisors, whose sum is σ = 71552418. Its totient is φ = 71552416.

The previous prime is 71552399. The next prime is 71552419. The reversal of 71552417 is 71425517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56490256 + 15062161 = 7516^2 + 3881^2 .

It is a cyclic number.

It is not a de Polignac number, because 71552417 - 2⁶ = 71552353 is a prime.

Together with 71552419, 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 (71552419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35776208 + 35776209.

It is an arithmetic number, because the mean of its divisors is an integer number (35776209).

Almost surely, 2^71552417 is an apocalyptic number.

It is an amenable number.

71552417 is a deficient number, since it is larger than the sum of its proper divisors (1).

71552417 is an equidigital number, since it uses as much as digits as its factorization.

71552417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 32.

The square root of 71552417 is about 8458.8661769767. The cubic root of 71552417 is about 415.1529256893.

The spelling of 71552417 in words is "seventy-one million, five hundred fifty-two thousand, four hundred seventeen".