553021361 has 6 divisors (see below), whose sum is σ = 578111730. Its totient is φ = 528976448.

The previous prime is 553021333. The next prime is 553021367. The reversal of 553021361 is 163120355.

It can be written as a sum of positive squares in only one way, i.e., 391248400 + 161772961 = 19780^2 + 12719^2 .

It is not a de Polignac number, because 553021361 - 2⁶ = 553021297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 553021361.

It is not an unprimeable number, because it can be changed into a prime (553021367) 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 5 ways as a sum of consecutive naturals, for example, 522176 + ... + 523233.

It is an arithmetic number, because the mean of its divisors is an integer number (96351955).

Almost surely, 2^553021361 is an apocalyptic number.

It is an amenable number.

553021361 is a deficient number, since it is larger than the sum of its proper divisors (25090369).

553021361 is a wasteful number, since it uses less digits than its factorization.

553021361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045455 (or 1045432 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 553021361 is about 23516.4062092829. The cubic root of 553021361 is about 820.8188137663.

The spelling of 553021361 in words is "five hundred fifty-three million, twenty-one thousand, three hundred sixty-one".