55130020242 has 48 divisors (see below), whose sum is σ = 124013477280. Its totient is φ = 16317544320.

The previous prime is 55130020237. The next prime is 55130020301. The reversal of 55130020242 is 24202003155.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 851767 + ... + 914202.

It is an arithmetic number, because the mean of its divisors is an integer number (2583614110).

Almost surely, 2^55130020242 is an apocalyptic number.

55130020242 is an abundant number, since it is smaller than the sum of its proper divisors (68883457038).

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

55130020242 is a wasteful number, since it uses less digits than its factorization.

55130020242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766039 (or 1766028 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 55130020242 its reverse (24202003155), we get a palindrome (79332023397).

The spelling of 55130020242 in words is "fifty-five billion, one hundred thirty million, twenty thousand, two hundred forty-two".