555505500061 has 2 divisors, whose sum is σ = 555505500062. Its totient is φ = 555505500060.

The previous prime is 555505500047. The next prime is 555505500163. The reversal of 555505500061 is 160005505555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474437174436 + 81068325625 = 688794^2 + 284725^2 .

It is a cyclic number.

It is not a de Polignac number, because 555505500061 - 2⁷ = 555505499933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555505509061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277752750030 + 277752750031.

It is an arithmetic number, because the mean of its divisors is an integer number (277752750031).

Almost surely, 2^555505500061 is an apocalyptic number.

It is an amenable number.

555505500061 is a deficient number, since it is larger than the sum of its proper divisors (1).

555505500061 is an equidigital number, since it uses as much as digits as its factorization.

555505500061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 555505500061 in words is "five hundred fifty-five billion, five hundred five million, five hundred thousand, sixty-one".