55505501001 has 6 divisors (see below), whose sum is σ = 80174612570. Its totient is φ = 37003667328.

The previous prime is 55505500993. The next prime is 55505501027. The reversal of 55505501001 is 10010550555.

55505501001 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 550 + 100 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39720091401 + 15785409600 = 199299^2 + 125640^2 .

It is not a de Polignac number, because 55505501001 - 2³ = 55505500993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55505501071) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3083638936 + ... + 3083638953.

Almost surely, 2^55505501001 is an apocalyptic number.

It is an amenable number.

55505501001 is a deficient number, since it is larger than the sum of its proper divisors (24669111569).

55505501001 is a wasteful number, since it uses less digits than its factorization.

55505501001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6167277895 (or 6167277892 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The spelling of 55505501001 in words is "fifty-five billion, five hundred five million, five hundred one thousand, one".