561424836 has 48 divisors (see below), whose sum is σ = 1508950016. Its totient is φ = 159141024.

The previous prime is 561424781. The next prime is 561424859. The reversal of 561424836 is 638424165.

It is a junction number, because it is equal to n+sod(n) for n = 561424794 and 561424803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15646 + ... + 36981.

Almost surely, 2^561424836 is an apocalyptic number.

It is an amenable number.

561424836 is an abundant number, since it is smaller than the sum of its proper divisors (947525180).

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

561424836 is a wasteful number, since it uses less digits than its factorization.

561424836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52768 (or 52766 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 561424836 is about 23694.4051624007. The cubic root of 561424836 is about 824.9555340589.

The spelling of 561424836 in words is "five hundred sixty-one million, four hundred twenty-four thousand, eight hundred thirty-six".