55110661061 has 2 divisors, whose sum is σ = 55110661062. Its totient is φ = 55110661060.

The previous prime is 55110661019. The next prime is 55110661087. The reversal of 55110661061 is 16016601155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51998136961 + 3112524100 = 228031^2 + 55790^2 .

It is a cyclic number.

It is not a de Polignac number, because 55110661061 - 2²² = 55106466757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55110661561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27555330530 + 27555330531.

It is an arithmetic number, because the mean of its divisors is an integer number (27555330531).

Almost surely, 2^55110661061 is an apocalyptic number.

It is an amenable number.

55110661061 is a deficient number, since it is larger than the sum of its proper divisors (1).

55110661061 is an equidigital number, since it uses as much as digits as its factorization.

55110661061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 55110661061 in words is "fifty-five billion, one hundred ten million, six hundred sixty-one thousand, sixty-one".