553316561 has 32 divisors (see below), whose sum is σ = 695236608. Its totient is φ = 429569280.

The previous prime is 553316531. The next prime is 553316563. The reversal of 553316561 is 165613355.

It is a happy number.

553316561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 553316561 - 2²⁶ = 486207697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553316563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362546 + ... + 364068.

It is an arithmetic number, because the mean of its divisors is an integer number (21726144).

Almost surely, 2^553316561 is an apocalyptic number.

It is an amenable number.

553316561 is a deficient number, since it is larger than the sum of its proper divisors (141920047).

553316561 is a wasteful number, since it uses less digits than its factorization.

553316561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

The product of its digits is 40500, while the sum is 35.

The square root of 553316561 is about 23522.6818411507. The cubic root of 553316561 is about 820.9648374282.

The spelling of 553316561 in words is "five hundred fifty-three million, three hundred sixteen thousand, five hundred sixty-one".