551211449 has 2 divisors, whose sum is σ = 551211450. Its totient is φ = 551211448.

The previous prime is 551211431. The next prime is 551211461. The reversal of 551211449 is 944112155.

551211449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305725225 + 245486224 = 17485^2 + 15668^2 .

It is a cyclic number.

It is not a de Polignac number, because 551211449 - 2¹² = 551207353 is a prime.

It is not a weakly prime, because it can be changed into another prime (551211469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275605724 + 275605725.

It is an arithmetic number, because the mean of its divisors is an integer number (275605725).

Almost surely, 2^551211449 is an apocalyptic number.

It is an amenable number.

551211449 is a deficient number, since it is larger than the sum of its proper divisors (1).

551211449 is an equidigital number, since it uses as much as digits as its factorization.

551211449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 551211449 is about 23477.8927717119. The cubic root of 551211449 is about 819.9223845831.

It can be divided in two parts, 5512 and 11449, that added together give a palindrome (16961).

The spelling of 551211449 in words is "five hundred fifty-one million, two hundred eleven thousand, four hundred forty-nine".