71972522 has 8 divisors (see below), whose sum is σ = 108471072. Its totient is φ = 35815500.

The previous prime is 71972521. The next prime is 71972533. The reversal of 71972522 is 22527917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71972521) 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, 84854 + ... + 85697.

It is an arithmetic number, because the mean of its divisors is an integer number (13558884).

Almost surely, 2^71972522 is an apocalyptic number.

71972522 is a deficient number, since it is larger than the sum of its proper divisors (36498550).

71972522 is a wasteful number, since it uses less digits than its factorization.

71972522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170764.

The product of its digits is 17640, while the sum is 35.

The square root of 71972522 is about 8483.6620630480. The cubic root of 71972522 is about 415.9638351512.

The spelling of 71972522 in words is "seventy-one million, nine hundred seventy-two thousand, five hundred twenty-two".