53503605 has 16 divisors (see below), whose sum is σ = 95117760. Its totient is φ = 28535184.

The previous prime is 53503603. The next prime is 53503633. The reversal of 53503605 is 50630535.

It is a happy number.

53503605 is a `hidden beast` number, since 5 + 3 + 50 + 3 + 605 = 666.

53503605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53503605 - 2¹ = 53503603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53503603) 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 15 ways as a sum of consecutive naturals, for example, 198027 + ... + 198296.

It is an arithmetic number, because the mean of its divisors is an integer number (5944860).

Almost surely, 2^53503605 is an apocalyptic number.

It is an amenable number.

53503605 is a deficient number, since it is larger than the sum of its proper divisors (41614155).

53503605 is a wasteful number, since it uses less digits than its factorization.

53503605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396337 (or 396331 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The square root of 53503605 is about 7314.6158477394. The cubic root of 53503605 is about 376.8145654437.

The spelling of 53503605 in words is "fifty-three million, five hundred three thousand, six hundred five".