551233169 has 2 divisors, whose sum is σ = 551233170. Its totient is φ = 551233168.

The previous prime is 551233153. The next prime is 551233171. The reversal of 551233169 is 961332155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540097600 + 11135569 = 23240^2 + 3337^2 .

It is a cyclic number.

It is not a de Polignac number, because 551233169 - 2⁴ = 551233153 is a prime.

It is a super-2 number, since 2×551233169² = 607716013211565122, which contains 22 as substring.

Together with 551233171, 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 (551233369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275616584 + 275616585.

It is an arithmetic number, because the mean of its divisors is an integer number (275616585).

Almost surely, 2^551233169 is an apocalyptic number.

It is an amenable number.

551233169 is a deficient number, since it is larger than the sum of its proper divisors (1).

551233169 is an equidigital number, since it uses as much as digits as its factorization.

551233169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 551233169 is about 23478.3553299630. The cubic root of 551233169 is about 819.9331538806.

The spelling of 551233169 in words is "five hundred fifty-one million, two hundred thirty-three thousand, one hundred sixty-nine".