55506155504 has 80 divisors (see below), whose sum is σ = 110804336640. Its totient is φ = 26923115520.

The previous prime is 55506155503. The next prime is 55506155513. The reversal of 55506155504 is 40555160555.

It is a happy number.

It is a super-4 number, since 4×55506155504⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506155501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55010552 + ... + 55011560.

It is an arithmetic number, because the mean of its divisors is an integer number (1385054208).

Almost surely, 2^55506155504 is an apocalyptic number.

It is an amenable number.

55506155504 is a deficient number, since it is larger than the sum of its proper divisors (55298181136).

55506155504 is a wasteful number, since it uses less digits than its factorization.

55506155504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 41.

The spelling of 55506155504 in words is "fifty-five billion, five hundred six million, one hundred fifty-five thousand, five hundred four".