71189471 has 2 divisors, whose sum is σ = 71189472. Its totient is φ = 71189470.

The previous prime is 71189453. The next prime is 71189477. The reversal of 71189471 is 17498117.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71189471 - 2¹⁸ = 70927327 is a prime.

It is a super-3 number, since 3×71189471³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71189477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35594735 + 35594736.

It is an arithmetic number, because the mean of its divisors is an integer number (35594736).

Almost surely, 2^71189471 is an apocalyptic number.

71189471 is a deficient number, since it is larger than the sum of its proper divisors (1).

71189471 is an equidigital number, since it uses as much as digits as its factorization.

71189471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 38.

The square root of 71189471 is about 8437.3853177391. The cubic root of 71189471 is about 414.4497880947.

The spelling of 71189471 in words is "seventy-one million, one hundred eighty-nine thousand, four hundred seventy-one".