53205605 has 16 divisors (see below), whose sum is σ = 67670400.
Its totient is φ = 40046400.
The previous prime is 53205589. The next prime is 53205611. The reversal of 53205605 is 50650235.
It is not a de Polignac number, because 53205605 - 24 = 53205589 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12491 + ... + 16199.
It is an arithmetic number, because the mean of its divisors is an integer number (4229400).
Almost surely, 253205605 is an apocalyptic number.
It is an amenable number.
53205605 is a deficient number, since it is larger than the sum of its proper divisors (14464795).
53205605 is a wasteful number, since it uses less digits than its factorization.
53205605 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3884.
The product of its (nonzero) digits is 4500, while the sum is 26.
The square root of 53205605 is about 7294.2172301077.
The cubic root of 53205605 is about 376.1136789401.
The spelling of 53205605 in words is "fifty-three million, two hundred five thousand, six hundred five".