551898847 has 2 divisors, whose sum is σ = 551898848. Its totient is φ = 551898846.

The previous prime is 551898821. The next prime is 551898857. The reversal of 551898847 is 748898155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551898847 is a prime.

It is equal to p_28939879 and since 551898847 and 28939879 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551898857) 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, 275949423 + 275949424.

It is an arithmetic number, because the mean of its divisors is an integer number (275949424).

Almost surely, 2^551898847 is an apocalyptic number.

551898847 is a deficient number, since it is larger than the sum of its proper divisors (1).

551898847 is an equidigital number, since it uses as much as digits as its factorization.

551898847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 55.

The square root of 551898847 is about 23492.5274715174. The cubic root of 551898847 is about 820.2630759111.

The spelling of 551898847 in words is "five hundred fifty-one million, eight hundred ninety-eight thousand, eight hundred forty-seven".