53409888 has 96 divisors (see below), whose sum is σ = 178053120. Its totient is φ = 15258240.

The previous prime is 53409883. The next prime is 53409943. The reversal of 53409888 is 88890435.

53409888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×53409888² = 5705232272345088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53409883) 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, 1633 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (1854720).

Almost surely, 2^53409888 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 53409888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89026560).

53409888 is an abundant number, since it is smaller than the sum of its proper divisors (124643232).

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

53409888 is a wasteful number, since it uses less digits than its factorization.

53409888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857 (or 8843 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 53409888 is about 7308.2068936231. The cubic root of 53409888 is about 376.5944271972.

The spelling of 53409888 in words is "fifty-three million, four hundred nine thousand, eight hundred eighty-eight".