55116561053 has 2 divisors, whose sum is σ = 55116561054. Its totient is φ = 55116561052.

The previous prime is 55116561023. The next prime is 55116561061. The reversal of 55116561053 is 35016561155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45272349529 + 9844211524 = 212773^2 + 99218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55116561053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55116560998 and 55116561016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55116561023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27558280526 + 27558280527.

It is an arithmetic number, because the mean of its divisors is an integer number (27558280527).

Almost surely, 2^55116561053 is an apocalyptic number.

It is an amenable number.

55116561053 is a deficient number, since it is larger than the sum of its proper divisors (1).

55116561053 is an equidigital number, since it uses as much as digits as its factorization.

55116561053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 55116561053 in words is "fifty-five billion, one hundred sixteen million, five hundred sixty-one thousand, fifty-three".