551600110261 has 2 divisors, whose sum is σ = 551600110262. Its totient is φ = 551600110260.

The previous prime is 551600110213. The next prime is 551600110277. The reversal of 551600110261 is 162011006155.

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., 486966708900 + 64633401361 = 697830^2 + 254231^2 .

It is a cyclic number.

It is not a de Polignac number, because 551600110261 - 2⁷ = 551600110133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551600113261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275800055130 + 275800055131.

It is an arithmetic number, because the mean of its divisors is an integer number (275800055131).

Almost surely, 2^551600110261 is an apocalyptic number.

It is an amenable number.

551600110261 is a deficient number, since it is larger than the sum of its proper divisors (1).

551600110261 is an equidigital number, since it uses as much as digits as its factorization.

551600110261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 551600110261 in words is "five hundred fifty-one billion, six hundred million, one hundred ten thousand, two hundred sixty-one".