53863440 has 160 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 13547520.

The previous prime is 53863417. The next prime is 53863451. The reversal of 53863440 is 4436835.

It is a congruent number.

It is an unprimeable number.

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, 494106 + ... + 494214.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^53863440 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 53863440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88387200).

53863440 is an abundant number, since it is smaller than the sum of its proper divisors (122910960).

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

53863440 is a wasteful number, since it uses less digits than its factorization.

53863440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 53863440 is about 7339.1716153800. The cubic root of 53863440 is about 377.6574259712.

The spelling of 53863440 in words is "fifty-three million, eight hundred sixty-three thousand, four hundred forty".