551612011 has 4 divisors (see below), whose sum is σ = 554500224. Its totient is φ = 548723800.

The previous prime is 551611897. The next prime is 551612023. The reversal of 551612011 is 110216155.

It is a happy number.

551612011 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 is a cyclic number.

It is not a de Polignac number, because 551612011 - 2²¹ = 549514859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551612051) 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, 1443820 + ... + 1444201.

It is an arithmetic number, because the mean of its divisors is an integer number (138625056).

Almost surely, 2^551612011 is an apocalyptic number.

551612011 is a deficient number, since it is larger than the sum of its proper divisors (2888213).

551612011 is a wasteful number, since it uses less digits than its factorization.

551612011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888212.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 551612011 is about 23486.4218432694. The cubic root of 551612011 is about 820.1209473591.

Adding to 551612011 its reverse (110216155), we get a palindrome (661828166).

The spelling of 551612011 in words is "five hundred fifty-one million, six hundred twelve thousand, eleven".