505550551097 has 2 divisors, whose sum is σ = 505550551098. Its totient is φ = 505550551096.

The previous prime is 505550551073. The next prime is 505550551141. The reversal of 505550551097 is 790155055505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468124166416 + 37426384681 = 684196^2 + 193459^2 .

It is a cyclic number.

It is not a de Polignac number, because 505550551097 - 2²² = 505546356793 is a prime.

It is a super-3 number, since 3×505550551097³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (505550551057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775275548 + 252775275549.

It is an arithmetic number, because the mean of its divisors is an integer number (252775275549).

Almost surely, 2^505550551097 is an apocalyptic number.

It is an amenable number.

505550551097 is a deficient number, since it is larger than the sum of its proper divisors (1).

505550551097 is an equidigital number, since it uses as much as digits as its factorization.

505550551097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 984375, while the sum is 47.

The spelling of 505550551097 in words is "five hundred five billion, five hundred fifty million, five hundred fifty-one thousand, ninety-seven".