71443473 has 4 divisors (see below), whose sum is σ = 95257968. Its totient is φ = 47628980.

The previous prime is 71443453. The next prime is 71443481. The reversal of 71443473 is 37434417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71443473 - 2⁶ = 71443409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71443403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11907243 + ... + 11907248.

It is an arithmetic number, because the mean of its divisors is an integer number (23814492).

Almost surely, 2^71443473 is an apocalyptic number.

It is an amenable number.

71443473 is a deficient number, since it is larger than the sum of its proper divisors (23814495).

71443473 is a wasteful number, since it uses less digits than its factorization.

71443473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23814494.

The product of its digits is 28224, while the sum is 33.

The square root of 71443473 is about 8452.4240901649. The cubic root of 71443473 is about 414.9421180220.

The spelling of 71443473 in words is "seventy-one million, four hundred forty-three thousand, four hundred seventy-three".