553421 has 4 divisors (see below), whose sum is σ = 603744. Its totient is φ = 503100.

The previous prime is 553417. The next prime is 553433. The reversal of 553421 is 124355.

553421 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 553421 - 2² = 553417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553393 and 553402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553411) 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, 25145 + ... + 25166.

It is an arithmetic number, because the mean of its divisors is an integer number (150936).

2⁵⁵³⁴²¹ is an apocalyptic number.

It is an amenable number.

553421 is a deficient number, since it is larger than the sum of its proper divisors (50323).

553421 is a wasteful number, since it uses less digits than its factorization.

553421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50322.

The product of its digits is 600, while the sum is 20.

The square root of 553421 is about 743.9227110393. The cubic root of 553421 is about 82.1016486797.

Adding to 553421 its reverse (124355), we get a palindrome (677776).

It can be divided in two parts, 5534 and 21, that added together give a palindrome (5555).

The spelling of 553421 in words is "five hundred fifty-three thousand, four hundred twenty-one".