55331230020 has 96 divisors (see below), whose sum is σ = 169055945856. Its totient is φ = 13410124800.

The previous prime is 55331229991. The next prime is 55331230033. The reversal of 55331230020 is 2003213355.

It is a happy number.

It is a super-2 number, since 2×55331230020² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3249930 + ... + 3266910.

It is an arithmetic number, because the mean of its divisors is an integer number (1760999436).

Almost surely, 2^55331230020 is an apocalyptic number.

It is an amenable number.

55331230020 is an abundant number, since it is smaller than the sum of its proper divisors (113724715836).

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

55331230020 is a wasteful number, since it uses less digits than its factorization.

55331230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21941 (or 21939 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 55331230020 its reverse (2003213355), we get a palindrome (57334443375).

The spelling of 55331230020 in words is "fifty-five billion, three hundred thirty-one million, two hundred thirty thousand, twenty".