55021530612 has 24 divisors (see below), whose sum is σ = 128394159712. Its totient is φ = 18338997600.

The previous prime is 55021530607. The next prime is 55021530677. The reversal of 55021530612 is 21603512055.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55021530612.

It is a congruent number.

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, 32314 + ... + 333297.

Almost surely, 2^55021530612 is an apocalyptic number.

It is an amenable number.

55021530612 is an abundant number, since it is smaller than the sum of its proper divisors (73372629100).

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

55021530612 is a wasteful number, since it uses less digits than its factorization.

55021530612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378159 (or 378157 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 55021530612 in words is "fifty-five billion, twenty-one million, five hundred thirty thousand, six hundred twelve".