551442847 has 2 divisors, whose sum is σ = 551442848. Its totient is φ = 551442846.

The previous prime is 551442841. The next prime is 551442893. The reversal of 551442847 is 748244155.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551442847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551442841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275721423 + 275721424.

It is an arithmetic number, because the mean of its divisors is an integer number (275721424).

Almost surely, 2^551442847 is an apocalyptic number.

551442847 is a deficient number, since it is larger than the sum of its proper divisors (1).

551442847 is an equidigital number, since it uses as much as digits as its factorization.

551442847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179200, while the sum is 40.

The square root of 551442847 is about 23482.8202522610. The cubic root of 551442847 is about 820.0371027233.

The spelling of 551442847 in words is "five hundred fifty-one million, four hundred forty-two thousand, eight hundred forty-seven".