53533509 has 8 divisors (see below), whose sum is σ = 71581632. Its totient is φ = 35587200.

The previous prime is 53533499. The next prime is 53533511. The reversal of 53533509 is 90533535.

53533509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53533509 - 2⁸ = 53533253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53533509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533009) 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, 24217 + ... + 26334.

It is an arithmetic number, because the mean of its divisors is an integer number (8947704).

Almost surely, 2^53533509 is an apocalyptic number.

It is an amenable number.

53533509 is a deficient number, since it is larger than the sum of its proper divisors (18048123).

53533509 is a wasteful number, since it uses less digits than its factorization.

53533509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50907.

The product of its (nonzero) digits is 30375, while the sum is 33.

The square root of 53533509 is about 7316.6596886831. The cubic root of 53533509 is about 376.8847548828.

The spelling of 53533509 in words is "fifty-three million, five hundred thirty-three thousand, five hundred nine".