53578609 has 6 divisors (see below), whose sum is σ = 62326194. Its totient is φ = 45924480.

The previous prime is 53578529. The next prime is 53578673. The reversal of 53578609 is 90687535.

53578609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 11289600 = 6503^2 + 3360^2 .

It is not a de Polignac number, because 53578609 - 2²⁵ = 20024177 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53578699) 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 5 ways as a sum of consecutive naturals, for example, 546672 + ... + 546769.

It is an arithmetic number, because the mean of its divisors is an integer number (10387699).

Almost surely, 2^53578609 is an apocalyptic number.

It is an amenable number.

53578609 is a deficient number, since it is larger than the sum of its proper divisors (8747585).

53578609 is a wasteful number, since it uses less digits than its factorization.

53578609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093455 (or 1093448 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 53578609 is about 7319.7410473322. The cubic root of 53578609 is about 376.9905623278.

The spelling of 53578609 in words is "fifty-three million, five hundred seventy-eight thousand, six hundred nine".