551055149 has 2 divisors, whose sum is σ = 551055150. Its totient is φ = 551055148.

The previous prime is 551055143. The next prime is 551055161. The reversal of 551055149 is 941550155.

551055149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316199524 + 234855625 = 17782^2 + 15325^2 .

It is a cyclic number.

It is not a de Polignac number, because 551055149 - 2²⁰ = 550006573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551055143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275527574 + 275527575.

It is an arithmetic number, because the mean of its divisors is an integer number (275527575).

Almost surely, 2^551055149 is an apocalyptic number.

It is an amenable number.

551055149 is a deficient number, since it is larger than the sum of its proper divisors (1).

551055149 is an equidigital number, since it uses as much as digits as its factorization.

551055149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 551055149 is about 23474.5638724131. The cubic root of 551055149 is about 819.8448789460.

The spelling of 551055149 in words is "five hundred fifty-one million, fifty-five thousand, one hundred forty-nine".