53555020 has 48 divisors (see below), whose sum is σ = 116113536. Its totient is φ = 20736000.

The previous prime is 53555009. The next prime is 53555023. The reversal of 53555020 is 2055535.

53555020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53555023) 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 15 ways as a sum of consecutive naturals, for example, 197485 + ... + 197755.

It is an arithmetic number, because the mean of its divisors is an integer number (2419032).

Almost surely, 2^53555020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53555020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58056768).

53555020 is an abundant number, since it is smaller than the sum of its proper divisors (62558516).

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

53555020 is a wasteful number, since it uses less digits than its factorization.

53555020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 53555020 is about 7318.1295424446. The cubic root of 53555020 is about 376.9352284552.

It can be divided in two parts, 535 and 55020, that added together give a palindrome (55555).

The spelling of 53555020 in words is "fifty-three million, five hundred fifty-five thousand, twenty".