551249129 has 2 divisors, whose sum is σ = 551249130. Its totient is φ = 551249128.

The previous prime is 551249117. The next prime is 551249159. The reversal of 551249129 is 921942155.

551249129 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., 279658729 + 271590400 = 16723^2 + 16480^2 .

It is a cyclic number.

It is not a de Polignac number, because 551249129 - 2¹⁶ = 551183593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551249092 and 551249101.

It is not a weakly prime, because it can be changed into another prime (551249159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275624564 + 275624565.

It is an arithmetic number, because the mean of its divisors is an integer number (275624565).

Almost surely, 2^551249129 is an apocalyptic number.

It is an amenable number.

551249129 is a deficient number, since it is larger than the sum of its proper divisors (1).

551249129 is an equidigital number, since it uses as much as digits as its factorization.

551249129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 38.

The square root of 551249129 is about 23478.6952150242. The cubic root of 551249129 is about 819.9410670516.

The spelling of 551249129 in words is "five hundred fifty-one million, two hundred forty-nine thousand, one hundred twenty-nine".