71979522 has 16 divisors (see below), whose sum is σ = 145059552. Its totient is φ = 23809760.

The previous prime is 71979491. The next prime is 71979539. The reversal of 71979522 is 22597917.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45003 + ... + 46574.

It is an arithmetic number, because the mean of its divisors is an integer number (9066222).

Almost surely, 2^71979522 is an apocalyptic number.

71979522 is an abundant number, since it is smaller than the sum of its proper divisors (73080030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71979522 is a wasteful number, since it uses less digits than its factorization.

71979522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91713.

The product of its digits is 79380, while the sum is 42.

The square root of 71979522 is about 8484.0746107045. The cubic root of 71979522 is about 415.9773201701.

The spelling of 71979522 in words is "seventy-one million, nine hundred seventy-nine thousand, five hundred twenty-two".