550411111 has 2 divisors, whose sum is σ = 550411112. Its totient is φ = 550411110.

The previous prime is 550411061. The next prime is 550411129. The reversal of 550411111 is 111114055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550411111 - 2¹⁵ = 550378343 is a prime.

It is a super-2 number, since 2×550411111² = 605904782224508642, which contains 22 as substring.

550411111 is a modest number, since divided by 11111 gives 5504 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550411151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275205555 + 275205556.

It is an arithmetic number, because the mean of its divisors is an integer number (275205556).

Almost surely, 2^550411111 is an apocalyptic number.

550411111 is a deficient number, since it is larger than the sum of its proper divisors (1).

550411111 is an equidigital number, since it uses as much as digits as its factorization.

550411111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 550411111 is about 23460.8420778113. The cubic root of 550411111 is about 819.5253603566.

Adding to 550411111 its reverse (111114055), we get a palindrome (661525166).

The spelling of 550411111 in words is "five hundred fifty million, four hundred eleven thousand, one hundred eleven".