551612163 has 16 divisors (see below), whose sum is σ = 761435136. Its totient is φ = 354980160.

The previous prime is 551612147. The next prime is 551612183. The reversal of 551612163 is 361216155.

It is not a de Polignac number, because 551612163 - 2⁴ = 551612147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551612163.

It is not an unprimeable number, because it can be changed into a prime (551612183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16503 + ... + 37088.

It is an arithmetic number, because the mean of its divisors is an integer number (47589696).

Almost surely, 2^551612163 is an apocalyptic number.

551612163 is a deficient number, since it is larger than the sum of its proper divisors (209822973).

551612163 is a wasteful number, since it uses less digits than its factorization.

551612163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53714.

The product of its digits is 5400, while the sum is 30.

The square root of 551612163 is about 23486.4250791814. The cubic root of 551612163 is about 820.1210226888.

It can be divided in two parts, 551612 and 163, that added together give a triangular number (551775 = T₁₀₅₀).

The spelling of 551612163 in words is "five hundred fifty-one million, six hundred twelve thousand, one hundred sixty-three".