551101 has 4 divisors (see below), whose sum is σ = 556092. Its totient is φ = 546112.

The previous prime is 551099. The next prime is 551107. The reversal of 551101 is 101155.

551101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101155 = 5 ⋅20231.

It can be written as a sum of positive squares in 2 ways, for example, as 62500 + 488601 = 250^2 + 699^2 .

It is a cyclic number.

It is not a de Polignac number, because 551101 - 2¹ = 551099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551107) 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, 2326 + ... + 2551.

It is an arithmetic number, because the mean of its divisors is an integer number (139023).

2⁵⁵¹¹⁰¹ is an apocalyptic number.

It is an amenable number.

551101 is a deficient number, since it is larger than the sum of its proper divisors (4991).

551101 is a wasteful number, since it uses less digits than its factorization.

551101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 551101 is about 742.3617716451. The cubic root of 551101 is about 81.9867616939.

Adding to 551101 its reverse (101155), we get a palindrome (652256).

It can be divided in two parts, 55 and 1101, that added together give a square (1156 = 34²).

The spelling of 551101 in words is "five hundred fifty-one thousand, one hundred one".