551383397 has 2 divisors, whose sum is σ = 551383398. Its totient is φ = 551383396.

The previous prime is 551383337. The next prime is 551383403. The reversal of 551383397 is 793383155.

551383397 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., 424730881 + 126652516 = 20609^2 + 11254^2 .

It is a cyclic number.

It is not a de Polignac number, because 551383397 - 2⁸ = 551383141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551383307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275691698 + 275691699.

It is an arithmetic number, because the mean of its divisors is an integer number (275691699).

Almost surely, 2^551383397 is an apocalyptic number.

It is an amenable number.

551383397 is a deficient number, since it is larger than the sum of its proper divisors (1).

551383397 is an equidigital number, since it uses as much as digits as its factorization.

551383397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 44.

The square root of 551383397 is about 23481.5543991449. The cubic root of 551383397 is about 820.0076327864.

The spelling of 551383397 in words is "five hundred fifty-one million, three hundred eighty-three thousand, three hundred ninety-seven".