551675321 has 2 divisors, whose sum is σ = 551675322. Its totient is φ = 551675320.

The previous prime is 551675273. The next prime is 551675351. The reversal of 551675321 is 123576155.

551675321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467035321 + 84640000 = 21611^2 + 9200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551675321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551675351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275837660 + 275837661.

It is an arithmetic number, because the mean of its divisors is an integer number (275837661).

Almost surely, 2^551675321 is an apocalyptic number.

It is an amenable number.

551675321 is a deficient number, since it is larger than the sum of its proper divisors (1).

551675321 is an equidigital number, since it uses as much as digits as its factorization.

551675321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 35.

The square root of 551675321 is about 23487.7696046261. The cubic root of 551675321 is about 820.1523219907.

The spelling of 551675321 in words is "five hundred fifty-one million, six hundred seventy-five thousand, three hundred twenty-one".