550400111 has 2 divisors, whose sum is σ = 550400112. Its totient is φ = 550400110.

The previous prime is 550400089. The next prime is 550400117. The reversal of 550400111 is 111004055.

550400111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550400111 - 2¹⁴ = 550383727 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550400111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550400117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275200055 + 275200056.

It is an arithmetic number, because the mean of its divisors is an integer number (275200056).

Almost surely, 2^550400111 is an apocalyptic number.

550400111 is a deficient number, since it is larger than the sum of its proper divisors (1).

550400111 is an equidigital number, since it uses as much as digits as its factorization.

550400111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 550400111 is about 23460.6076434520. The cubic root of 550400111 is about 819.5199008986.

Adding to 550400111 its reverse (111004055), we get a palindrome (661404166).

The spelling of 550400111 in words is "five hundred fifty million, four hundred thousand, one hundred eleven".