555800173961 has 2 divisors, whose sum is σ = 555800173962. Its totient is φ = 555800173960.

The previous prime is 555800173867. The next prime is 555800173979. The reversal of 555800173961 is 169371008555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 508574364736 + 47225809225 = 713144^2 + 217315^2 .

It is a cyclic number.

It is not a de Polignac number, because 555800173961 - 2³⁰ = 554726432137 is a prime.

It is not a weakly prime, because it can be changed into another prime (555800173991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277900086980 + 277900086981.

It is an arithmetic number, because the mean of its divisors is an integer number (277900086981).

Almost surely, 2^555800173961 is an apocalyptic number.

It is an amenable number.

555800173961 is a deficient number, since it is larger than the sum of its proper divisors (1).

555800173961 is an equidigital number, since it uses as much as digits as its factorization.

555800173961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 555800173961 in words is "five hundred fifty-five billion, eight hundred million, one hundred seventy-three thousand, nine hundred sixty-one".