53245509 has 4 divisors (see below), whose sum is σ = 70994016. Its totient is φ = 35497004.

The previous prime is 53245471. The next prime is 53245559. The reversal of 53245509 is 90554235.

53245509 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 53245509 - 2¹⁷ = 53114437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53245509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53245559) 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, 8874249 + ... + 8874254.

It is an arithmetic number, because the mean of its divisors is an integer number (17748504).

Almost surely, 2^53245509 is an apocalyptic number.

It is an amenable number.

53245509 is a deficient number, since it is larger than the sum of its proper divisors (17748507).

53245509 is a wasteful number, since it uses less digits than its factorization.

53245509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17748506.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 53245509 is about 7296.9520349253. The cubic root of 53245509 is about 376.2076833826.

The spelling of 53245509 in words is "fifty-three million, two hundred forty-five thousand, five hundred nine".