55216566029 has 2 divisors, whose sum is σ = 55216566030. Its totient is φ = 55216566028.

The previous prime is 55216565983. The next prime is 55216566037. The reversal of 55216566029 is 92066561255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34031763529 + 21184802500 = 184477^2 + 145550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55216566029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55216566089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27608283014 + 27608283015.

It is an arithmetic number, because the mean of its divisors is an integer number (27608283015).

Almost surely, 2^55216566029 is an apocalyptic number.

It is an amenable number.

55216566029 is a deficient number, since it is larger than the sum of its proper divisors (1).

55216566029 is an equidigital number, since it uses as much as digits as its factorization.

55216566029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 55216566029 in words is "fifty-five billion, two hundred sixteen million, five hundred sixty-six thousand, twenty-nine".