56953840 has 20 divisors (see below), whose sum is σ = 132417864. Its totient is φ = 22781504.

The previous prime is 56953829. The next prime is 56953873. The reversal of 56953840 is 4835965.

56953840 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 (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 56953793 and 56953802.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 355882 + ... + 356041.

Almost surely, 2^56953840 is an apocalyptic number.

It is an amenable number.

56953840 is an abundant number, since it is smaller than the sum of its proper divisors (75464024).

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

56953840 is a wasteful number, since it uses less digits than its factorization.

56953840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711936 (or 711930 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 56953840 is about 7546.7767954273. The cubic root of 56953840 is about 384.7461980469.

The spelling of 56953840 in words is "fifty-six million, nine hundred fifty-three thousand, eight hundred forty".