550361969 has 2 divisors, whose sum is σ = 550361970. Its totient is φ = 550361968.

The previous prime is 550361957. The next prime is 550362023. The reversal of 550361969 is 969163055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276889600 + 273472369 = 16640^2 + 16537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550361969 is a prime.

It is a super-2 number, since 2×550361969² = 605796593843113922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550361069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275180984 + 275180985.

It is an arithmetic number, because the mean of its divisors is an integer number (275180985).

Almost surely, 2^550361969 is an apocalyptic number.

It is an amenable number.

550361969 is a deficient number, since it is larger than the sum of its proper divisors (1).

550361969 is an equidigital number, since it uses as much as digits as its factorization.

550361969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 550361969 is about 23459.7947348224. The cubic root of 550361969 is about 819.5009699127.

The spelling of 550361969 in words is "five hundred fifty million, three hundred sixty-one thousand, nine hundred sixty-nine".