61055505001 has 2 divisors, whose sum is σ = 61055505002. Its totient is φ = 61055505000.

The previous prime is 61055504977. The next prime is 61055505029. The reversal of 61055505001 is 10050555016.

It is an a-pointer prime, because the next prime (61055505029) can be obtained adding 61055505001 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31505895001 + 29549610000 = 177499^2 + 171900^2 .

It is a cyclic number.

It is not a de Polignac number, because 61055505001 - 2⁵ = 61055504969 is a prime.

It is not a weakly prime, because it can be changed into another prime (61055535001) 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, 30527752500 + 30527752501.

It is an arithmetic number, because the mean of its divisors is an integer number (30527752501).

Almost surely, 2^61055505001 is an apocalyptic number.

It is an amenable number.

61055505001 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055505001 is an equidigital number, since it uses as much as digits as its factorization.

61055505001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 61055505001 in words is "sixty-one billion, fifty-five million, five hundred five thousand, one".