551115101 has 4 divisors (see below), whose sum is σ = 570119100. Its totient is φ = 532111104.

The previous prime is 551115067. The next prime is 551115107. The reversal of 551115101 is 101511155.

551115101 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.

It can be written as a sum of positive squares in 2 ways, for example, as 188403076 + 362712025 = 13726^2 + 19045^2 .

It is a cyclic number.

It is not a de Polignac number, because 551115101 - 2²² = 546920797 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 (551115107) 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, 9501956 + ... + 9502013.

It is an arithmetic number, because the mean of its divisors is an integer number (142529775).

Almost surely, 2^551115101 is an apocalyptic number.

It is an amenable number.

551115101 is a deficient number, since it is larger than the sum of its proper divisors (19003999).

551115101 is a wasteful number, since it uses less digits than its factorization.

551115101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19003998.

The product of its (nonzero) digits is 125, while the sum is 20.

The square root of 551115101 is about 23475.8407943145. The cubic root of 551115101 is about 819.8746095201.

Adding to 551115101 its reverse (101511155), we get a palindrome (652626256).

The spelling of 551115101 in words is "five hundred fifty-one million, one hundred fifteen thousand, one hundred one".