423531553 has 4 divisors (see below), whose sum is σ = 433381168. Its totient is φ = 413681940.

The previous prime is 423531551. The next prime is 423531587. The reversal of 423531553 is 355135324.

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 423531553 - 2¹ = 423531551 is a prime.

It is a super-3 number, since 3×423531553³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423531551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924743 + ... + 4924828.

It is an arithmetic number, because the mean of its divisors is an integer number (108345292).

Almost surely, 2^423531553 is an apocalyptic number.

423531553 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

423531553 is a deficient number, since it is larger than the sum of its proper divisors (9849615).

423531553 is an equidigital number, since it uses as much as digits as its factorization.

423531553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849614.

The product of its digits is 27000, while the sum is 31.

The square root of 423531553 is about 20579.8822397020. The cubic root of 423531553 is about 750.9803789548.

Adding to 423531553 its reverse (355135324), we get a palindrome (778666877).

The spelling of 423531553 in words is "four hundred twenty-three million, five hundred thirty-one thousand, five hundred fifty-three".