553632561 has 12 divisors (see below), whose sum is σ = 803484240. Its totient is φ = 367337880.

The previous prime is 553632491. The next prime is 553632587. The reversal of 553632561 is 165236355.

It is not a de Polignac number, because 553632561 - 2¹⁷ = 553501489 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (553634561) 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, 143871 + ... + 147668.

It is an arithmetic number, because the mean of its divisors is an integer number (66957020).

Almost surely, 2^553632561 is an apocalyptic number.

It is an amenable number.

553632561 is a deficient number, since it is larger than the sum of its proper divisors (249851679).

553632561 is a wasteful number, since it uses less digits than its factorization.

553632561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291756 (or 291753 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 553632561 is about 23529.3978035988. The cubic root of 553632561 is about 821.1210924767.

The spelling of 553632561 in words is "five hundred fifty-three million, six hundred thirty-two thousand, five hundred sixty-one".