55506155509 has 8 divisors (see below), whose sum is σ = 64632504960. Its totient is φ = 46679030736.

The previous prime is 55506155503. The next prime is 55506155513. The reversal of 55506155509 is 90555160555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55506155509 - 2³ = 55506155501 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74805769 + ... + 74806510.

It is an arithmetic number, because the mean of its divisors is an integer number (8079063120).

Almost surely, 2^55506155509 is an apocalyptic number.

It is an amenable number.

55506155509 is a deficient number, since it is larger than the sum of its proper divisors (9126349451).

55506155509 is a wasteful number, since it uses less digits than its factorization.

55506155509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149612339.

The product of its (nonzero) digits is 843750, while the sum is 46.

The spelling of 55506155509 in words is "fifty-five billion, five hundred six million, one hundred fifty-five thousand, five hundred nine".