71523273 has 4 divisors (see below), whose sum is σ = 95364368. Its totient is φ = 47682180.

The previous prime is 71523227. The next prime is 71523289. The reversal of 71523273 is 37232517.

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 not a de Polignac number, because 71523273 - 2²⁰ = 70474697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71523273.

It is not an unprimeable number, because it can be changed into a prime (71523073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11920543 + ... + 11920548.

It is an arithmetic number, because the mean of its divisors is an integer number (23841092).

Almost surely, 2^71523273 is an apocalyptic number.

It is an amenable number.

71523273 is a deficient number, since it is larger than the sum of its proper divisors (23841095).

71523273 is a wasteful number, since it uses less digits than its factorization.

71523273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23841094.

The product of its digits is 8820, while the sum is 30.

The square root of 71523273 is about 8457.1433120174. The cubic root of 71523273 is about 415.0965527511.

The spelling of 71523273 in words is "seventy-one million, five hundred twenty-three thousand, two hundred seventy-three".