561324040 has 32 divisors (see below), whose sum is σ = 1297117080. Its totient is φ = 218460672.

The previous prime is 561323981. The next prime is 561324041. The reversal of 561324040 is 40423165.

It can be written as a sum of positive squares in 4 ways, for example, as 482505156 + 78818884 = 21966^2 + 8878^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561323996 and 561324014.

It is not an unprimeable number, because it can be changed into a prime (561324041) 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, 188157 + ... + 191116.

Almost surely, 2^561324040 is an apocalyptic number.

It is an amenable number.

561324040 is an abundant number, since it is smaller than the sum of its proper divisors (735793040).

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

561324040 is a wasteful number, since it uses less digits than its factorization.

561324040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379321 (or 379317 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 561324040 is about 23692.2780669145. The cubic root of 561324040 is about 824.9061613501.

The spelling of 561324040 in words is "five hundred sixty-one million, three hundred twenty-four thousand, forty".