53559820 has 24 divisors (see below), whose sum is σ = 112618800. Its totient is φ = 21396672.

The previous prime is 53559799. The next prime is 53559827. The reversal of 53559820 is 2895535.

It is a self number, because there is not a number n which added to its sum of digits gives 53559820.

It is not an unprimeable number, because it can be changed into a prime (53559827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23491 + ... + 25669.

It is an arithmetic number, because the mean of its divisors is an integer number (4692450).

Almost surely, 2^53559820 is an apocalyptic number.

It is an amenable number.

53559820 is an abundant number, since it is smaller than the sum of its proper divisors (59058980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53559820 is a wasteful number, since it uses less digits than its factorization.

53559820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 53559820 is about 7318.4574877497. The cubic root of 53559820 is about 376.9464893668.

The spelling of 53559820 in words is "fifty-three million, five hundred fifty-nine thousand, eight hundred twenty".