551045111 has 2 divisors, whose sum is σ = 551045112. Its totient is φ = 551045110.

The previous prime is 551045101. The next prime is 551045141. The reversal of 551045111 is 111540155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551045111 - 2¹⁴ = 551028727 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 (551045101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275522555 + 275522556.

It is an arithmetic number, because the mean of its divisors is an integer number (275522556).

Almost surely, 2^551045111 is an apocalyptic number.

551045111 is a deficient number, since it is larger than the sum of its proper divisors (1).

551045111 is an equidigital number, since it uses as much as digits as its factorization.

551045111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 551045111 is about 23474.3500655503. The cubic root of 551045111 is about 819.8399008279.

Adding to 551045111 its reverse (111540155), we get a palindrome (662585266).

The spelling of 551045111 in words is "five hundred fifty-one million, forty-five thousand, one hundred eleven".