561204210 has 32 divisors (see below), whose sum is σ = 1539303552. Its totient is φ = 128275200.

The previous prime is 561204199. The next prime is 561204233. The reversal of 561204210 is 12402165.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 1335991 + ... + 1336410.

It is an arithmetic number, because the mean of its divisors is an integer number (48103236).

Almost surely, 2^561204210 is an apocalyptic number.

561204210 is an abundant number, since it is smaller than the sum of its proper divisors (978099342).

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

561204210 is a wasteful number, since it uses less digits than its factorization.

561204210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672418.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 561204210 is about 23689.7490489030. The cubic root of 561204210 is about 824.8474575634.

Adding to 561204210 its reverse (12402165), we get a palindrome (573606375).

The spelling of 561204210 in words is "five hundred sixty-one million, two hundred four thousand, two hundred ten".