551612811 has 8 divisors (see below), whose sum is σ = 753422544. Its totient is φ = 358772480.

The previous prime is 551612801. The next prime is 551612849. The reversal of 551612811 is 118216155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551612811 - 2¹³ = 551604619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551612801) 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 7 ways as a sum of consecutive naturals, for example, 2242206 + ... + 2242451.

It is an arithmetic number, because the mean of its divisors is an integer number (94177818).

Almost surely, 2^551612811 is an apocalyptic number.

551612811 is a deficient number, since it is larger than the sum of its proper divisors (201809733).

551612811 is a wasteful number, since it uses less digits than its factorization.

551612811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484701.

The product of its digits is 2400, while the sum is 30.

The square root of 551612811 is about 23486.4388743803. The cubic root of 551612811 is about 820.1213438312.

Adding to 551612811 its reverse (118216155), we get a palindrome (669828966).

The spelling of 551612811 in words is "five hundred fifty-one million, six hundred twelve thousand, eight hundred eleven".