551324441 has 4 divisors (see below), whose sum is σ = 559553232. Its totient is φ = 543095652.

The previous prime is 551324437. The next prime is 551324447. The reversal of 551324441 is 144423155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144423155 = 5 ⋅28884631.

It is a cyclic number.

It is not a de Polignac number, because 551324441 - 2² = 551324437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551324447) 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 3 ways as a sum of consecutive naturals, for example, 4114295 + ... + 4114428.

It is an arithmetic number, because the mean of its divisors is an integer number (139888308).

Almost surely, 2^551324441 is an apocalyptic number.

It is an amenable number.

551324441 is a deficient number, since it is larger than the sum of its proper divisors (8228791).

551324441 is an equidigital number, since it uses as much as digits as its factorization.

551324441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8228790.

The product of its digits is 9600, while the sum is 29.

The square root of 551324441 is about 23480.2989972445. The cubic root of 551324441 is about 819.9784056379.

Adding to 551324441 its reverse (144423155), we get a palindrome (695747596).

The spelling of 551324441 in words is "five hundred fifty-one million, three hundred twenty-four thousand, four hundred forty-one".