53406609 has 4 divisors (see below), whose sum is σ = 71208816. Its totient is φ = 35604404.

The previous prime is 53406593. The next prime is 53406611. The reversal of 53406609 is 90660435.

It is a happy number.

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 53406609 - 2⁴ = 53406593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53406609.

It is not an unprimeable number, because it can be changed into a prime (53406649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8901099 + ... + 8901104.

It is an arithmetic number, because the mean of its divisors is an integer number (17802204).

Almost surely, 2^53406609 is an apocalyptic number.

It is an amenable number.

53406609 is a deficient number, since it is larger than the sum of its proper divisors (17802207).

53406609 is a wasteful number, since it uses less digits than its factorization.

53406609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17802206.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 53406609 is about 7307.9825533453. The cubic root of 53406609 is about 376.5867202697.

The spelling of 53406609 in words is "fifty-three million, four hundred six thousand, six hundred nine".