552523321 has 4 divisors (see below), whose sum is σ = 631455232. Its totient is φ = 473591412.

The previous prime is 552523291. The next prime is 552523327. The reversal of 552523321 is 123325255.

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 not a de Polignac number, because 552523321 - 2⁹ = 552522809 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 552523321.

It is not an unprimeable number, because it can be changed into a prime (552523327) 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, 39465945 + ... + 39465958.

It is an arithmetic number, because the mean of its divisors is an integer number (157863808).

Almost surely, 2^552523321 is an apocalyptic number.

It is an amenable number.

552523321 is a deficient number, since it is larger than the sum of its proper divisors (78931911).

552523321 is an equidigital number, since it uses as much as digits as its factorization.

552523321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78931910.

The product of its digits is 9000, while the sum is 28.

The square root of 552523321 is about 23505.8146210677. The cubic root of 552523321 is about 820.5723354133.

Adding to 552523321 its reverse (123325255), we get a palindrome (675848576).

The spelling of 552523321 in words is "five hundred fifty-two million, five hundred twenty-three thousand, three hundred twenty-one".