56561036 has 12 divisors (see below), whose sum is σ = 113122128. Its totient is φ = 24240432.

The previous prime is 56561033. The next prime is 56561041. The reversal of 56561036 is 63016565.

56561036 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 56560993 and 56561011.

It is not an unprimeable number, because it can be changed into a prime (56561033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009991 + ... + 1010046.

It is an arithmetic number, because the mean of its divisors is an integer number (9426844).

Almost surely, 2^56561036 is an apocalyptic number.

It is an amenable number.

56561036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56561036 is a wasteful number, since it uses less digits than its factorization.

56561036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020048 (or 2020046 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 56561036 is about 7520.7071476025. The cubic root of 56561036 is about 383.8596401805.

The spelling of 56561036 in words is "fifty-six million, five hundred sixty-one thousand, thirty-six".