552320613 has 20 divisors (see below), whose sum is σ = 888540268. Its totient is φ = 339888960.

The previous prime is 552320611. The next prime is 552320623. The reversal of 552320613 is 316023255.

552320613 is a `hidden beast` number, since 5 + 5 + 23 + 20 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124947684 + 427372929 = 11178^2 + 20673^2 .

It is not a de Polignac number, because 552320613 - 2¹ = 552320611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552320611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261208 + ... + 263313.

Almost surely, 2^552320613 is an apocalyptic number.

It is an amenable number.

552320613 is a deficient number, since it is larger than the sum of its proper divisors (336219655).

552320613 is a wasteful number, since it uses less digits than its factorization.

552320613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524546 (or 524537 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 552320613 is about 23501.5023562325. The cubic root of 552320613 is about 820.4719734820.

Adding to 552320613 its reverse (316023255), we get a palindrome (868343868).

The spelling of 552320613 in words is "five hundred fifty-two million, three hundred twenty thousand, six hundred thirteen".