553909121 has 2 divisors, whose sum is σ = 553909122. Its totient is φ = 553909120.

The previous prime is 553909099. The next prime is 553909141. The reversal of 553909121 is 121909355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444999025 + 108910096 = 21095^2 + 10436^2 .

It is a cyclic number.

It is not a de Polignac number, because 553909121 - 2²² = 549714817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (553909141) 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, 276954560 + 276954561.

It is an arithmetic number, because the mean of its divisors is an integer number (276954561).

Almost surely, 2^553909121 is an apocalyptic number.

It is an amenable number.

553909121 is a deficient number, since it is larger than the sum of its proper divisors (1).

553909121 is an equidigital number, since it uses as much as digits as its factorization.

553909121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 553909121 is about 23535.2739733363. The cubic root of 553909121 is about 821.2577965308.

The spelling of 553909121 in words is "five hundred fifty-three million, nine hundred nine thousand, one hundred twenty-one".