53057840 has 40 divisors (see below), whose sum is σ = 134576208. Its totient is φ = 19293440.

The previous prime is 53057789. The next prime is 53057863. The reversal of 53057840 is 4875035.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 53057797 and 53057806.

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 7 ways as a sum of consecutive naturals, for example, 29267 + ... + 31026.

Almost surely, 2^53057840 is an apocalyptic number.

It is an amenable number.

53057840 is an abundant number, since it is smaller than the sum of its proper divisors (81518368).

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

53057840 is a wasteful number, since it uses less digits than its factorization.

53057840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60317 (or 60311 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 53057840 is about 7284.0812735718. The cubic root of 53057840 is about 375.7651694983.

The spelling of 53057840 in words is "fifty-three million, fifty-seven thousand, eight hundred forty".