53544561 has 16 divisors (see below), whose sum is σ = 81782784. Its totient is φ = 30525264.

The previous prime is 53544521. The next prime is 53544571. The reversal of 53544561 is 16544535.

It is not a de Polignac number, because 53544561 - 2¹⁸ = 53282417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53544521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6970 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (5111424).

Almost surely, 2^53544561 is an apocalyptic number.

It is an amenable number.

53544561 is a deficient number, since it is larger than the sum of its proper divisors (28238223).

53544561 is a wasteful number, since it uses less digits than its factorization.

53544561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980.

The product of its digits is 36000, while the sum is 33.

The square root of 53544561 is about 7317.4149123854. The cubic root of 53544561 is about 376.9106890673.

The spelling of 53544561 in words is "fifty-three million, five hundred forty-four thousand, five hundred sixty-one".