71955532 has 12 divisors (see below), whose sum is σ = 137369736. Its totient is φ = 32707040.

The previous prime is 71955517. The next prime is 71955553. The reversal of 71955532 is 23555917.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71955491 and 71955500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817633 + ... + 817720.

It is an arithmetic number, because the mean of its divisors is an integer number (11447478).

Almost surely, 2^71955532 is an apocalyptic number.

It is an amenable number.

71955532 is a deficient number, since it is larger than the sum of its proper divisors (65414204).

71955532 is a wasteful number, since it uses less digits than its factorization.

71955532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635368 (or 1635366 counting only the distinct ones).

The product of its digits is 47250, while the sum is 37.

The square root of 71955532 is about 8482.6606675029. The cubic root of 71955532 is about 415.9311014470.

The spelling of 71955532 in words is "seventy-one million, nine hundred fifty-five thousand, five hundred thirty-two".