55602344561 has 2 divisors, whose sum is σ = 55602344562. Its totient is φ = 55602344560.

The previous prime is 55602344549. The next prime is 55602344597. The reversal of 55602344561 is 16544320655.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29840489536 + 25761855025 = 172744^2 + 160505^2 .

It is a cyclic number.

It is not a de Polignac number, because 55602344561 - 2²⁶ = 55535235697 is a prime.

It is not a weakly prime, because it can be changed into another prime (55602344531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27801172280 + 27801172281.

It is an arithmetic number, because the mean of its divisors is an integer number (27801172281).

Almost surely, 2^55602344561 is an apocalyptic number.

It is an amenable number.

55602344561 is a deficient number, since it is larger than the sum of its proper divisors (1).

55602344561 is an equidigital number, since it uses as much as digits as its factorization.

55602344561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 55602344561 in words is "fifty-five billion, six hundred two million, three hundred forty-four thousand, five hundred sixty-one".