53942609 has 4 divisors (see below), whose sum is σ = 61648704. Its totient is φ = 46236516.

The previous prime is 53942599. The next prime is 53942617. The reversal of 53942609 is 90624935.

53942609 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 a cyclic number.

It is not a de Polignac number, because 53942609 - 2⁸ = 53942353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53942209) 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, 3853037 + ... + 3853050.

It is an arithmetic number, because the mean of its divisors is an integer number (15412176).

Almost surely, 2^53942609 is an apocalyptic number.

It is an amenable number.

53942609 is a deficient number, since it is larger than the sum of its proper divisors (7706095).

53942609 is an equidigital number, since it uses as much as digits as its factorization.

53942609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706094.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 53942609 is about 7344.5632273131. The cubic root of 53942609 is about 377.8423635603.

The spelling of 53942609 in words is "fifty-three million, nine hundred forty-two thousand, six hundred nine".