552131321 has 12 divisors (see below), whose sum is σ = 670311168. Its totient is φ = 445415232.

The previous prime is 552131311. The next prime is 552131341. The reversal of 552131321 is 123131255.

It is a happy number.

It is not a de Polignac number, because 552131321 - 2¹⁸ = 551869177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (552131311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134441 + ... + 138486.

It is an arithmetic number, because the mean of its divisors is an integer number (55859264).

Almost surely, 2^552131321 is an apocalyptic number.

It is an amenable number.

552131321 is a deficient number, since it is larger than the sum of its proper divisors (118179847).

552131321 is a wasteful number, since it uses less digits than its factorization.

552131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272968 (or 272951 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 552131321 is about 23497.4747792183. The cubic root of 552131321 is about 820.3782317173.

Adding to 552131321 its reverse (123131255), we get a palindrome (675262576).

The spelling of 552131321 in words is "five hundred fifty-two million, one hundred thirty-one thousand, three hundred twenty-one".