55100561005 has 40 divisors (see below), whose sum is σ = 79796568600. Its totient is φ = 36480140928.

The previous prime is 55100560997. The next prime is 55100561029. The reversal of 55100561005 is 50016500155.

It can be written as a sum of positive squares in 4 ways, for example, as 4780201321 + 50320359684 = 69139^2 + 224322^2 .

It is not a de Polignac number, because 55100561005 - 2³ = 55100560997 is a prime.

It is a super-2 number, since 2×55100561005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 269011 + ... + 427279.

It is an arithmetic number, because the mean of its divisors is an integer number (1994914215).

Almost surely, 2^55100561005 is an apocalyptic number.

It is an amenable number.

55100561005 is a deficient number, since it is larger than the sum of its proper divisors (24696007595).

55100561005 is an equidigital number, since it uses as much as digits as its factorization.

55100561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158331 (or 158310 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 55100561005 in words is "fifty-five billion, one hundred million, five hundred sixty-one thousand, five".