53604561 has 4 divisors (see below), whose sum is σ = 71472752. Its totient is φ = 35736372.

The previous prime is 53604533. The next prime is 53604563. The reversal of 53604561 is 16540635.

53604561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53604561 - 2⁶ = 53604497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53604563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8934091 + ... + 8934096.

It is an arithmetic number, because the mean of its divisors is an integer number (17868188).

Almost surely, 2^53604561 is an apocalyptic number.

It is an amenable number.

53604561 is a deficient number, since it is larger than the sum of its proper divisors (17868191).

53604561 is a wasteful number, since it uses less digits than its factorization.

53604561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17868190.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 53604561 is about 7321.5135730257. The cubic root of 53604561 is about 377.0514204453.

The spelling of 53604561 in words is "fifty-three million, six hundred four thousand, five hundred sixty-one".