53283509 has 4 divisors (see below), whose sum is σ = 53309004. Its totient is φ = 53258016.

The previous prime is 53283473. The next prime is 53283551. The reversal of 53283509 is 90538235.

53283509 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.

It can be written as a sum of positive squares in 2 ways, for example, as 9591409 + 43692100 = 3097^2 + 6610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53283509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53283599) 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, 9302 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (13327251).

Almost surely, 2^53283509 is an apocalyptic number.

It is an amenable number.

53283509 is a deficient number, since it is larger than the sum of its proper divisors (25495).

53283509 is a wasteful number, since it uses less digits than its factorization.

53283509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25494.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 53283509 is about 7299.5553974198. Note that the first 3 decimals coincide. The cubic root of 53283509 is about 376.2971588001.

The spelling of 53283509 in words is "fifty-three million, two hundred eighty-three thousand, five hundred nine".