71955552 has 48 divisors (see below), whose sum is σ = 189326592. Its totient is φ = 23928960.

The previous prime is 71955517. The next prime is 71955553. The reversal of 71955552 is 25555917.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 71955552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71955553) 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 7 ways as a sum of consecutive naturals, for example, 69277 + ... + 70307.

It is an arithmetic number, because the mean of its divisors is an integer number (3944304).

Almost surely, 2^71955552 is an apocalyptic number.

It is an amenable number.

71955552 is an abundant number, since it is smaller than the sum of its proper divisors (117371040).

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

71955552 is a wasteful number, since it uses less digits than its factorization.

71955552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1763 counting only the distinct ones).

The product of its digits is 78750, while the sum is 39.

The square root of 71955552 is about 8482.6618463782. The cubic root of 71955552 is about 415.9311399830.

The spelling of 71955552 in words is "seventy-one million, nine hundred fifty-five thousand, five hundred fifty-two".