561535536 has 40 divisors (see below), whose sum is σ = 1461087040. Its totient is φ = 185829696.

The previous prime is 561535531. The next prime is 561535567. The reversal of 561535536 is 635535165.

It is a junction number, because it is equal to n+sod(n) for n = 561535494 and 561535503.

It is not an unprimeable number, because it can be changed into a prime (561535531) 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, 35410 + ... + 48753.

It is an arithmetic number, because the mean of its divisors is an integer number (36527176).

Almost surely, 2^561535536 is an apocalyptic number.

It is an amenable number.

561535536 is an abundant number, since it is smaller than the sum of its proper divisors (899551504).

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

561535536 is a wasteful number, since it uses less digits than its factorization.

561535536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84313 (or 84307 counting only the distinct ones).

The product of its digits is 202500, while the sum is 39.

The square root of 561535536 is about 23696.7410417551. The cubic root of 561535536 is about 825.0097512162.

The spelling of 561535536 in words is "five hundred sixty-one million, five hundred thirty-five thousand, five hundred thirty-six".