53488820 has 96 divisors (see below), whose sum is σ = 143216640. Its totient is φ = 16295040.

The previous prime is 53488793. The next prime is 53488829. The reversal of 53488820 is 2888435.

It is a super-2 number, since 2×53488820² = 5722107729984800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53488829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72011 + ... + 72749.

It is an arithmetic number, because the mean of its divisors is an integer number (1491840).

Almost surely, 2^53488820 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 53488820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71608320).

53488820 is an abundant number, since it is smaller than the sum of its proper divisors (89727820).

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

53488820 is a wasteful number, since it uses less digits than its factorization.

53488820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 53488820 is about 7313.6051301667. The cubic root of 53488820 is about 376.7798530375.

The spelling of 53488820 in words is "fifty-three million, four hundred eighty-eight thousand, eight hundred twenty".