561322208 has 24 divisors (see below), whose sum is σ = 1140753600. Its totient is φ = 271607040.

The previous prime is 561322193. The next prime is 561322211. The reversal of 561322208 is 802223165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281933 + ... + 283916.

It is an arithmetic number, because the mean of its divisors is an integer number (47531400).

Almost surely, 2^561322208 is an apocalyptic number.

It is an amenable number.

561322208 is an abundant number, since it is smaller than the sum of its proper divisors (579431392).

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

561322208 is a wasteful number, since it uses less digits than its factorization.

561322208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565890 (or 565882 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 561322208 is about 23692.2394044970. The cubic root of 561322208 is about 824.9052639304.

The spelling of 561322208 in words is "five hundred sixty-one million, three hundred twenty-two thousand, two hundred eight".