553045421 has 2 divisors, whose sum is σ = 553045422. Its totient is φ = 553045420.

The previous prime is 553045417. The next prime is 553045447. The reversal of 553045421 is 124540355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303247396 + 249798025 = 17414^2 + 15805^2 .

It is a cyclic number.

It is not a de Polignac number, because 553045421 - 2² = 553045417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553045481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276522710 + 276522711.

It is an arithmetic number, because the mean of its divisors is an integer number (276522711).

Almost surely, 2^553045421 is an apocalyptic number.

It is an amenable number.

553045421 is a deficient number, since it is larger than the sum of its proper divisors (1).

553045421 is an equidigital number, since it uses as much as digits as its factorization.

553045421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 553045421 is about 23516.9177614755. The cubic root of 553045421 is about 820.8307172331.

Adding to 553045421 its reverse (124540355), we get a palindrome (677585776).

The spelling of 553045421 in words is "five hundred fifty-three million, forty-five thousand, four hundred twenty-one".