551345422 has 4 divisors (see below), whose sum is σ = 827018136. Its totient is φ = 275672710.

The previous prime is 551345413. The next prime is 551345429. The reversal of 551345422 is 224543155.

551345422 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, and also an emirpimes, since its reverse is a distinct semiprime: 224543155 = 5 ⋅44908631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551345429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137836354 + ... + 137836357.

It is an arithmetic number, because the mean of its divisors is an integer number (206754534).

Almost surely, 2^551345422 is an apocalyptic number.

551345422 is a deficient number, since it is larger than the sum of its proper divisors (275672714).

551345422 is a wasteful number, since it uses less digits than its factorization.

551345422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275672713.

The product of its digits is 24000, while the sum is 31.

The square root of 551345422 is about 23480.7457718021. The cubic root of 551345422 is about 819.9888071048.

Adding to 551345422 its reverse (224543155), we get a palindrome (775888577).

The spelling of 551345422 in words is "five hundred fifty-one million, three hundred forty-five thousand, four hundred twenty-two".