53003509 has 8 divisors (see below), whose sum is σ = 57139992. Its totient is φ = 48875520.

The previous prime is 53003507. The next prime is 53003527. The reversal of 53003509 is 90530035.

53003509 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 4 ways, for example, as 8820900 + 44182609 = 2970^2 + 6647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53003509 - 2¹ = 53003507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53003507) 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 7 ways as a sum of consecutive naturals, for example, 17877 + ... + 20629.

It is an arithmetic number, because the mean of its divisors is an integer number (7142499).

Almost surely, 2^53003509 is an apocalyptic number.

It is an amenable number.

53003509 is a deficient number, since it is larger than the sum of its proper divisors (4136483).

53003509 is a wasteful number, since it uses less digits than its factorization.

53003509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 53003509 is about 7280.3508844011. The cubic root of 53003509 is about 375.6368650547.

The spelling of 53003509 in words is "fifty-three million, three thousand, five hundred nine".