505105501097 has 2 divisors, whose sum is σ = 505105501098. Its totient is φ = 505105501096.

The previous prime is 505105501091. The next prime is 505105501127. The reversal of 505105501097 is 790105501505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373246461721 + 131859039376 = 610939^2 + 363124^2 .

It is a cyclic number.

It is not a de Polignac number, because 505105501097 - 2⁸ = 505105500841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505105501097.

It is not a weakly prime, because it can be changed into another prime (505105501091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252552750548 + 252552750549.

It is an arithmetic number, because the mean of its divisors is an integer number (252552750549).

Almost surely, 2^505105501097 is an apocalyptic number.

It is an amenable number.

505105501097 is a deficient number, since it is larger than the sum of its proper divisors (1).

505105501097 is an equidigital number, since it uses as much as digits as its factorization.

505105501097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 38.

The spelling of 505105501097 in words is "five hundred five billion, one hundred five million, five hundred one thousand, ninety-seven".