71983523 has 4 divisors (see below), whose sum is σ = 72102720. Its totient is φ = 71864328.

The previous prime is 71983453. The next prime is 71983547. The reversal of 71983523 is 32538917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32538917 = 43 ⋅756719.

It is a cyclic number.

It is not a de Polignac number, because 71983523 - 2¹⁰ = 71982499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71283523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58688 + ... + 59901.

It is an arithmetic number, because the mean of its divisors is an integer number (18025680).

Almost surely, 2^71983523 is an apocalyptic number.

71983523 is a deficient number, since it is larger than the sum of its proper divisors (119197).

71983523 is a wasteful number, since it uses less digits than its factorization.

71983523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119196.

The product of its digits is 45360, while the sum is 38.

The square root of 71983523 is about 8484.3104021482. The cubic root of 71983523 is about 415.9850274289.

The spelling of 71983523 in words is "seventy-one million, nine hundred eighty-three thousand, five hundred twenty-three".