55505011001 has 16 divisors (see below), whose sum is σ = 61251811200. Its totient is φ = 49875408000.

The previous prime is 55505010997. The next prime is 55505011061. The reversal of 55505011001 is 10011050555.

It is a happy number.

55505011001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55505011001 - 2² = 55505010997 is a prime.

It is a super-2 number, since 2×55505011001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55505011061) 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, 3615620 + ... + 3630938.

It is an arithmetic number, because the mean of its divisors is an integer number (3828238200).

Almost surely, 2^55505011001 is an apocalyptic number.

It is an amenable number.

55505011001 is a deficient number, since it is larger than the sum of its proper divisors (5746800199).

55505011001 is a wasteful number, since it uses less digits than its factorization.

55505011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19120.

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 55505011001 its reverse (10011050555), we get a palindrome (65516061556).

The spelling of 55505011001 in words is "fifty-five billion, five hundred five million, eleven thousand, one".