55241021000 has 128 divisors (see below), whose sum is σ = 141153217920. Its totient is φ = 20068000000.

The previous prime is 55241020949. The next prime is 55241021039. The reversal of 55241021000 is 12014255.

55241021000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55241021000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15959270 + ... + 15962730.

It is an arithmetic number, because the mean of its divisors is an integer number (1102759515).

Almost surely, 2^55241021000 is an apocalyptic number.

55241021000 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 55241021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70576608960).

55241021000 is an abundant number, since it is smaller than the sum of its proper divisors (85912196920).

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

55241021000 is a wasteful number, since it uses less digits than its factorization.

55241021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944 (or 4930 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 55241021000 its reverse (12014255), we get a palindrome (55253035255).

The spelling of 55241021000 in words is "fifty-five billion, two hundred forty-one million, twenty-one thousand".