55011100061 has 4 divisors (see below), whose sum is σ = 55225151292. Its totient is φ = 54797048832.

The previous prime is 55011100031. The next prime is 55011100069. The reversal of 55011100061 is 16000111055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16000111055 = 5 ⋅3200022211.

It can be written as a sum of positive squares in 2 ways, for example, as 45449976100 + 9561123961 = 213190^2 + 97781^2 .

It is a cyclic number.

It is not a de Polignac number, because 55011100061 - 2¹⁰ = 55011099037 is a prime.

It is a super-2 number, since 2×55011100061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011100069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107025230 + ... + 107025743.

It is an arithmetic number, because the mean of its divisors is an integer number (13806287823).

Almost surely, 2^55011100061 is an apocalyptic number.

It is an amenable number.

55011100061 is a deficient number, since it is larger than the sum of its proper divisors (214051231).

55011100061 is a wasteful number, since it uses less digits than its factorization.

55011100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214051230.

The product of its (nonzero) digits is 150, while the sum is 20.

The spelling of 55011100061 in words is "fifty-five billion, eleven million, one hundred thousand, sixty-one".