55144125550 has 48 divisors (see below), whose sum is σ = 104152409712. Its totient is φ = 21717273600.

The previous prime is 55144125539. The next prime is 55144125563. The reversal of 55144125550 is 5552144155.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 10184644 + ... + 10190056.

It is an arithmetic number, because the mean of its divisors is an integer number (2169841869).

Almost surely, 2^55144125550 is an apocalyptic number.

55144125550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55144125550 is a deficient number, since it is larger than the sum of its proper divisors (49008284162).

55144125550 is a wasteful number, since it uses less digits than its factorization.

55144125550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533 (or 8528 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 55144125550 in words is "fifty-five billion, one hundred forty-four million, one hundred twenty-five thousand, five hundred fifty".