55501601544 has 64 divisors (see below), whose sum is σ = 154216022400. Its totient is φ = 18495145152.

The previous prime is 55501601531. The next prime is 55501601591. The reversal of 55501601544 is 44510610555.

55501601544 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 1 + 601 + 5 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55501601499 and 55501601508.

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 15 ways as a sum of consecutive naturals, for example, 743494 + ... + 814730.

It is an arithmetic number, because the mean of its divisors is an integer number (2409625350).

Almost surely, 2^55501601544 is an apocalyptic number.

55501601544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55501601544 is an abundant number, since it is smaller than the sum of its proper divisors (98714420856).

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

55501601544 is a wasteful number, since it uses less digits than its factorization.

55501601544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74859 (or 74849 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 55501601544 in words is "fifty-five billion, five hundred one million, six hundred one thousand, five hundred forty-four".