423312553 has 4 divisors (see below), whose sum is σ = 424318468. Its totient is φ = 422306640.

The previous prime is 423312541. The next prime is 423312581. The reversal of 423312553 is 355213324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 143352729 + 279959824 = 11973^2 + 16732^2 .

It is a cyclic number.

It is not a de Polignac number, because 423312553 - 2⁵ = 423312521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423312583) 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, 502326 + ... + 503167.

It is an arithmetic number, because the mean of its divisors is an integer number (106079617).

Almost surely, 2^423312553 is an apocalyptic number.

It is an amenable number.

423312553 is a deficient number, since it is larger than the sum of its proper divisors (1005915).

423312553 is a wasteful number, since it uses less digits than its factorization.

423312553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005914.

The product of its digits is 10800, while the sum is 28.

The square root of 423312553 is about 20574.5608215583. The cubic root of 423312553 is about 750.8509174801.

Adding to 423312553 its reverse (355213324), we get a palindrome (778525877).

The spelling of 423312553 in words is "four hundred twenty-three million, three hundred twelve thousand, five hundred fifty-three".