55444121250 has 320 divisors, whose sum is σ = 165160131840. Its totient is φ = 12136320000.

The previous prime is 55444121237. The next prime is 55444121297. The reversal of 55444121250 is 5212144455.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 131696040 + ... + 131696460.

It is an arithmetic number, because the mean of its divisors is an integer number (516125412).

Almost surely, 2^55444121250 is an apocalyptic number.

55444121250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55444121250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82580065920).

55444121250 is an abundant number, since it is smaller than the sum of its proper divisors (109716010590).

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

55444121250 is a wasteful number, since it uses less digits than its factorization.

55444121250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 55444121250 in words is "fifty-five billion, four hundred forty-four million, one hundred twenty-one thousand, two hundred fifty".