550636111 has 2 divisors, whose sum is σ = 550636112. Its totient is φ = 550636110.

The previous prime is 550636061. The next prime is 550636139. The reversal of 550636111 is 111636055.

It is an a-pointer prime, because the next prime (550636139) can be obtained adding 550636111 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550636111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550636111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550636181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275318055 + 275318056.

It is an arithmetic number, because the mean of its divisors is an integer number (275318056).

Almost surely, 2^550636111 is an apocalyptic number.

550636111 is a deficient number, since it is larger than the sum of its proper divisors (1).

550636111 is an equidigital number, since it uses as much as digits as its factorization.

550636111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 550636111 is about 23465.6368121558. The cubic root of 550636111 is about 819.6370151314.

The spelling of 550636111 in words is "five hundred fifty million, six hundred thirty-six thousand, one hundred eleven".