71722273 has 4 divisors (see below), whose sum is σ = 81968320. Its totient is φ = 61476228.

The previous prime is 71722271. The next prime is 71722297. The reversal of 71722273 is 37222717.

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 71722273 - 2¹ = 71722271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71722271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123013 + ... + 5123026.

It is an arithmetic number, because the mean of its divisors is an integer number (20492080).

Almost surely, 2^71722273 is an apocalyptic number.

It is an amenable number.

71722273 is a deficient number, since it is larger than the sum of its proper divisors (10246047).

71722273 is a wasteful number, since it uses less digits than its factorization.

71722273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246046.

The product of its digits is 8232, while the sum is 31.

The square root of 71722273 is about 8468.9003418390. The cubic root of 71722273 is about 415.4811721835.

The spelling of 71722273 in words is "seventy-one million, seven hundred twenty-two thousand, two hundred seventy-three".