551398439 has 2 divisors, whose sum is σ = 551398440. Its totient is φ = 551398438.

The previous prime is 551398403. The next prime is 551398453. The reversal of 551398439 is 934893155.

551398439 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551398439 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 551398393 and 551398402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551398039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275699219 + 275699220.

It is an arithmetic number, because the mean of its divisors is an integer number (275699220).

Almost surely, 2^551398439 is an apocalyptic number.

551398439 is a deficient number, since it is larger than the sum of its proper divisors (1).

551398439 is an equidigital number, since it uses as much as digits as its factorization.

551398439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The square root of 551398439 is about 23481.8746909185. The cubic root of 551398439 is about 820.0150894507.

The spelling of 551398439 in words is "five hundred fifty-one million, three hundred ninety-eight thousand, four hundred thirty-nine".