53056840 has 64 divisors (see below), whose sum is σ = 123710400. Its totient is φ = 20466432.

The previous prime is 53056811. The next prime is 53056849. The reversal of 53056840 is 4865035.

It is not an unprimeable number, because it can be changed into a prime (53056849) 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 15 ways as a sum of consecutive naturals, for example, 187339 + ... + 187621.

It is an arithmetic number, because the mean of its divisors is an integer number (1932975).

Almost surely, 2^53056840 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 53056840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61855200).

53056840 is an abundant number, since it is smaller than the sum of its proper divisors (70653560).

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

53056840 is a wasteful number, since it uses less digits than its factorization.

53056840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 53056840 is about 7284.0126304119. The cubic root of 53056840 is about 375.7628087568.

The spelling of 53056840 in words is "fifty-three million, fifty-six thousand, eight hundred forty".