55242000000 has 1120 divisors, whose sum is σ = 231409537920. Its totient is φ = 12960000000.

The previous prime is 55241999993. The next prime is 55242000019. The reversal of 55242000000 is 24255.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 139 ways as a sum of consecutive naturals, for example, 1781999985 + ... + 1782000015.

Almost surely, 2^55242000000 is an apocalyptic number.

55242000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55242000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115704768960).

55242000000 is an abundant number, since it is smaller than the sum of its proper divisors (176167537920).

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

55242000000 is an frugal number, since it uses more digits than its factorization.

55242000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

Adding to 55242000000 its reverse (24255), we get a palindrome (55242024255).

The spelling of 55242000000 in words is "fifty-five billion, two hundred forty-two million", and thus it is an aban number.