551105101 has 2 divisors, whose sum is σ = 551105102. Its totient is φ = 551105100.

The previous prime is 551105059. The next prime is 551105111. The reversal of 551105101 is 101501155.

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., 528770025 + 22335076 = 22995^2 + 4726^2 .

It is a cyclic number.

It is not a de Polignac number, because 551105101 - 2¹¹ = 551103053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551105111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275552550 + 275552551.

It is an arithmetic number, because the mean of its divisors is an integer number (275552551).

Almost surely, 2^551105101 is an apocalyptic number.

It is an amenable number.

551105101 is a deficient number, since it is larger than the sum of its proper divisors (1).

551105101 is an equidigital number, since it uses as much as digits as its factorization.

551105101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 551105101 is about 23475.6278084314. The cubic root of 551105101 is about 819.8696506070.

Adding to 551105101 its reverse (101501155), we get a palindrome (652606256).

The spelling of 551105101 in words is "five hundred fifty-one million, one hundred five thousand, one hundred one".