561225215 has 16 divisors (see below), whose sum is σ = 689326848. Its totient is φ = 438487296.

The previous prime is 561225187. The next prime is 561225229. The reversal of 561225215 is 512522165.

It is a cyclic number.

It is not a de Polignac number, because 561225215 - 2⁸ = 561224959 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 54347 + ... + 63843.

It is an arithmetic number, because the mean of its divisors is an integer number (43082928).

Almost surely, 2^561225215 is an apocalyptic number.

561225215 is a deficient number, since it is larger than the sum of its proper divisors (128101633).

561225215 is a wasteful number, since it uses less digits than its factorization.

561225215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778.

The product of its digits is 6000, while the sum is 29.

The square root of 561225215 is about 23690.1923799702. The cubic root of 561225215 is about 824.8577483538.

The spelling of 561225215 in words is "five hundred sixty-one million, two hundred twenty-five thousand, two hundred fifteen".