551398241 has 2 divisors, whose sum is σ = 551398242. Its totient is φ = 551398240.

The previous prime is 551398201. The next prime is 551398277. The reversal of 551398241 is 142893155.

It is a happy number.

551398241 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., 541911841 + 9486400 = 23279^2 + 3080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551398241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551398195 and 551398204.

It is not a weakly prime, because it can be changed into another prime (551398201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275699120 + 275699121.

It is an arithmetic number, because the mean of its divisors is an integer number (275699121).

Almost surely, 2^551398241 is an apocalyptic number.

It is an amenable number.

551398241 is a deficient number, since it is larger than the sum of its proper divisors (1).

551398241 is an equidigital number, since it uses as much as digits as its factorization.

551398241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 38.

The square root of 551398241 is about 23481.8704749004. The cubic root of 551398241 is about 820.0149912984.

The spelling of 551398241 in words is "five hundred fifty-one million, three hundred ninety-eight thousand, two hundred forty-one".