55060100561 has 2 divisors, whose sum is σ = 55060100562. Its totient is φ = 55060100560.

The previous prime is 55060100467. The next prime is 55060100593. The reversal of 55060100561 is 16500106055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40062424336 + 14997676225 = 200156^2 + 122465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55060100561 is a prime.

It is a super-2 number, since 2×55060100561² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55060100261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27530050280 + 27530050281.

It is an arithmetic number, because the mean of its divisors is an integer number (27530050281).

Almost surely, 2^55060100561 is an apocalyptic number.

It is an amenable number.

55060100561 is a deficient number, since it is larger than the sum of its proper divisors (1).

55060100561 is an equidigital number, since it uses as much as digits as its factorization.

55060100561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 55060100561 in words is "fifty-five billion, sixty million, one hundred thousand, five hundred sixty-one".