550115011 has 4 divisors (see below), whose sum is σ = 551034000. Its totient is φ = 549196024.

The previous prime is 550115009. The next prime is 550115023. The reversal of 550115011 is 110511055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110511055 = 5 ⋅22102211.

It is a cyclic number.

It is not a de Polignac number, because 550115011 - 2¹ = 550115009 is a prime.

It is a super-3 number, since 3×550115011³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550115011.

It is not an unprimeable number, because it can be changed into a prime (550115611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458596 + ... + 459793.

It is an arithmetic number, because the mean of its divisors is an integer number (137758500).

Almost surely, 2^550115011 is an apocalyptic number.

550115011 is a deficient number, since it is larger than the sum of its proper divisors (918989).

550115011 is an equidigital number, since it uses as much as digits as its factorization.

550115011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918988.

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

The square root of 550115011 is about 23454.5307137022. The cubic root of 550115011 is about 819.3783762923.

Adding to 550115011 its reverse (110511055), we get a palindrome (660626066).

The spelling of 550115011 in words is "five hundred fifty million, one hundred fifteen thousand, eleven".