551512889 has 2 divisors, whose sum is σ = 551512890. Its totient is φ = 551512888.

The previous prime is 551512879. The next prime is 551512891. The reversal of 551512889 is 988215155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470152489 + 81360400 = 21683^2 + 9020^2 .

It is a cyclic number.

It is not a de Polignac number, because 551512889 - 2⁴ = 551512873 is a prime.

Together with 551512891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551512879) 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, 275756444 + 275756445.

It is an arithmetic number, because the mean of its divisors is an integer number (275756445).

Almost surely, 2^551512889 is an apocalyptic number.

It is an amenable number.

551512889 is a deficient number, since it is larger than the sum of its proper divisors (1).

551512889 is an equidigital number, since it uses as much as digits as its factorization.

551512889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 44.

The square root of 551512889 is about 23484.3115504798. The cubic root of 551512889 is about 820.0718204990.

The spelling of 551512889 in words is "five hundred fifty-one million, five hundred twelve thousand, eight hundred eighty-nine".