71450217 has 12 divisors (see below), whose sum is σ = 103483120. Its totient is φ = 47505528.

The previous prime is 71450209. The next prime is 71450221. The reversal of 71450217 is 71205417.

It is not a de Polignac number, because 71450217 - 2³ = 71450209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71450237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7063 + ... + 13884.

Almost surely, 2^71450217 is an apocalyptic number.

It is an amenable number.

71450217 is a deficient number, since it is larger than the sum of its proper divisors (32032903).

71450217 is a wasteful number, since it uses less digits than its factorization.

71450217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21332 (or 21329 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 71450217 is about 8452.8230195598. The cubic root of 71450217 is about 414.9551739457.

The spelling of 71450217 in words is "seventy-one million, four hundred fifty thousand, two hundred seventeen".