55500561101 has 4 divisors (see below), whose sum is σ = 56072731932. Its totient is φ = 54928390272.

The previous prime is 55500561091. The next prime is 55500561133. The reversal of 55500561101 is 10116500555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33105438601 + 22395122500 = 181949^2 + 149650^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500561101 - 2⁶ = 55500561037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500561301) 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, 286085270 + ... + 286085463.

It is an arithmetic number, because the mean of its divisors is an integer number (14018182983).

Almost surely, 2^55500561101 is an apocalyptic number.

It is an amenable number.

55500561101 is a deficient number, since it is larger than the sum of its proper divisors (572170831).

55500561101 is an equidigital number, since it uses as much as digits as its factorization.

55500561101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572170830.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 55500561101 in words is "fifty-five billion, five hundred million, five hundred sixty-one thousand, one hundred one".