424553 has 4 divisors (see below), whose sum is σ = 425940. Its totient is φ = 423168.

The previous prime is 424549. The next prime is 424559. The reversal of 424553 is 355424.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 262144 = 403^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 424553 - 2² = 424549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424559) 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 in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (106485).

2⁴²⁴⁵⁵³ is an apocalyptic number.

It is an amenable number.

424553 is a deficient number, since it is larger than the sum of its proper divisors (1387).

424553 is an equidigital number, since it uses as much as digits as its factorization.

424553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 2400, while the sum is 23.

The square root of 424553 is about 651.5773169778. The cubic root of 424553 is about 75.1583616820.

Adding to 424553 its reverse (355424), we get a palindrome (779977).

The spelling of 424553 in words is "four hundred twenty-four thousand, five hundred fifty-three".