553434021 has 12 divisors (see below), whose sum is σ = 913605472. Its totient is φ = 316247976.

The previous prime is 553434019. The next prime is 553434047. The reversal of 553434021 is 120434355.

It is not a de Polignac number, because 553434021 - 2¹ = 553434019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553434001) 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 in 11 ways as a sum of consecutive naturals, for example, 4392271 + ... + 4392396.

Almost surely, 2^553434021 is an apocalyptic number.

It is an amenable number.

553434021 is a deficient number, since it is larger than the sum of its proper divisors (360171451).

553434021 is a wasteful number, since it uses less digits than its factorization.

553434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784680 (or 8784677 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 553434021 is about 23525.1784477823. The cubic root of 553434021 is about 821.0229257594.

Adding to 553434021 its reverse (120434355), we get a palindrome (673868376).

The spelling of 553434021 in words is "five hundred fifty-three million, four hundred thirty-four thousand, twenty-one".