553220989 has 2 divisors, whose sum is σ = 553220990. Its totient is φ = 553220988.

The previous prime is 553220981. The next prime is 553221073. The reversal of 553220989 is 989022355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501984025 + 51236964 = 22405^2 + 7158^2 .

It is a cyclic number.

It is not a de Polignac number, because 553220989 - 2³ = 553220981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553220981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276610494 + 276610495.

It is an arithmetic number, because the mean of its divisors is an integer number (276610495).

Almost surely, 2^553220989 is an apocalyptic number.

It is an amenable number.

553220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

553220989 is an equidigital number, since it uses as much as digits as its factorization.

553220989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 553220989 is about 23520.6502673714. The cubic root of 553220989 is about 820.9175674596.

The spelling of 553220989 in words is "five hundred fifty-three million, two hundred twenty thousand, nine hundred eighty-nine".