561217230 has 48 divisors (see below), whose sum is σ = 1667618784. Its totient is φ = 128278080.

The previous prime is 561217229. The next prime is 561217253. The reversal of 561217230 is 32712165.

It is a happy number.

561217230 is a `hidden beast` number, since 5 + 612 + 17 + 2 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 561217194 and 561217203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444781 + ... + 446040.

It is an arithmetic number, because the mean of its divisors is an integer number (34742058).

Almost surely, 2^561217230 is an apocalyptic number.

561217230 is an abundant number, since it is smaller than the sum of its proper divisors (1106401554).

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

561217230 is a wasteful number, since it uses less digits than its factorization.

561217230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890841 (or 890838 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 561217230 is about 23690.0238497136. The cubic root of 561217230 is about 824.8538363650.

Adding to 561217230 its reverse (32712165), we get a palindrome (593929395).

The spelling of 561217230 in words is "five hundred sixty-one million, two hundred seventeen thousand, two hundred thirty".