553124021 has 2 divisors, whose sum is σ = 553124022. Its totient is φ = 553124020.

The previous prime is 553123957. The next prime is 553124057. The reversal of 553124021 is 120421355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550840900 + 2283121 = 23470^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 553124021 - 2⁶ = 553123957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276562010 + 276562011.

It is an arithmetic number, because the mean of its divisors is an integer number (276562011).

Almost surely, 2^553124021 is an apocalyptic number.

It is an amenable number.

553124021 is a deficient number, since it is larger than the sum of its proper divisors (1).

553124021 is an equidigital number, since it uses as much as digits as its factorization.

553124021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 553124021 is about 23518.5888394691. The cubic root of 553124021 is about 820.8696014644.

Adding to 553124021 its reverse (120421355), we get a palindrome (673545376).

The spelling of 553124021 in words is "five hundred fifty-three million, one hundred twenty-four thousand, twenty-one".