505550272361 has 2 divisors, whose sum is σ = 505550272362. Its totient is φ = 505550272360.

The previous prime is 505550272307. The next prime is 505550272373. The reversal of 505550272361 is 163272055505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480969990400 + 24580281961 = 693520^2 + 156781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505550272361 is a prime.

It is not a weakly prime, because it can be changed into another prime (505550202361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775136180 + 252775136181.

It is an arithmetic number, because the mean of its divisors is an integer number (252775136181).

Almost surely, 2^505550272361 is an apocalyptic number.

It is an amenable number.

505550272361 is a deficient number, since it is larger than the sum of its proper divisors (1).

505550272361 is an equidigital number, since it uses as much as digits as its factorization.

505550272361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315000, while the sum is 41.

The spelling of 505550272361 in words is "five hundred five billion, five hundred fifty million, two hundred seventy-two thousand, three hundred sixty-one".