56563540 has 24 divisors (see below), whose sum is σ = 129582432. Its totient is φ = 20568480.

The previous prime is 56563519. The next prime is 56563541. The reversal of 56563540 is 4536565.

It is a junction number, because it is equal to n+sod(n) for n = 56563496 and 56563505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56563541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128334 + ... + 128773.

It is an arithmetic number, because the mean of its divisors is an integer number (5399268).

Almost surely, 2^56563540 is an apocalyptic number.

It is an amenable number.

56563540 is an abundant number, since it is smaller than the sum of its proper divisors (73018892).

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

56563540 is a wasteful number, since it uses less digits than its factorization.

56563540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257127 (or 257125 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 56563540 is about 7520.8736194674. The cubic root of 56563540 is about 383.8653046828.

The spelling of 56563540 in words is "fifty-six million, five hundred sixty-three thousand, five hundred forty".