55971222992 has 20 divisors (see below), whose sum is σ = 108523966596. Its totient is φ = 27965038080.

The previous prime is 55971222971. The next prime is 55971223027. The reversal of 55971222992 is 29922217955.

It can be written as a sum of positive squares in 2 ways, for example, as 30542455696 + 25428767296 = 174764^2 + 159464^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263383 + ... + 1306934.

Almost surely, 2^55971222992 is an apocalyptic number.

It is an amenable number.

55971222992 is a deficient number, since it is larger than the sum of its proper divisors (52552743604).

55971222992 is a wasteful number, since it uses less digits than its factorization.

55971222992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571686 (or 2571680 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The spelling of 55971222992 in words is "fifty-five billion, nine hundred seventy-one million, two hundred twenty-two thousand, nine hundred ninety-two".