553421343 has 4 divisors (see below), whose sum is σ = 737895128. Its totient is φ = 368947560.

The previous prime is 553421327. The next prime is 553421359. The reversal of 553421343 is 343124355.

553421343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (553421327) and next prime (553421359).

It is not a de Polignac number, because 553421343 - 2⁴ = 553421327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 553421343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553425343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92236888 + ... + 92236893.

It is an arithmetic number, because the mean of its divisors is an integer number (184473782).

Almost surely, 2^553421343 is an apocalyptic number.

553421343 is a deficient number, since it is larger than the sum of its proper divisors (184473785).

553421343 is a wasteful number, since it uses less digits than its factorization.

553421343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184473784.

The product of its digits is 21600, while the sum is 30.

The square root of 553421343 is about 23524.9089902597. The cubic root of 553421343 is about 821.0166564134.

Adding to 553421343 its reverse (343124355), we get a palindrome (896545698).

The spelling of 553421343 in words is "five hundred fifty-three million, four hundred twenty-one thousand, three hundred forty-three".