71448775 has 6 divisors (see below), whose sum is σ = 88596512. Its totient is φ = 57159000.

The previous prime is 71448763. The next prime is 71448781. The reversal of 71448775 is 57784417.

It is not a de Polignac number, because 71448775 - 2⁷ = 71448647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1428951 + ... + 1429000.

Almost surely, 2^71448775 is an apocalyptic number.

71448775 is a deficient number, since it is larger than the sum of its proper divisors (17147737).

71448775 is a wasteful number, since it uses less digits than its factorization.

71448775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857961 (or 2857956 counting only the distinct ones).

The product of its digits is 219520, while the sum is 43.

The square root of 71448775 is about 8452.7377221821. The cubic root of 71448775 is about 414.9523824012.

The spelling of 71448775 in words is "seventy-one million, four hundred forty-eight thousand, seven hundred seventy-five".