561215241 has 12 divisors (see below), whose sum is σ = 812788080. Its totient is φ = 373154040.

The previous prime is 561215233. The next prime is 561215261. The reversal of 561215241 is 142512165.

561215241 is a `hidden beast` number, since 5 + 612 + 1 + 5 + 2 + 41 = 666.

561215241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561215241 - 2³ = 561215233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561215261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78855 + ... + 85676.

It is an arithmetic number, because the mean of its divisors is an integer number (67732340).

Almost surely, 2^561215241 is an apocalyptic number.

It is an amenable number.

561215241 is a deficient number, since it is larger than the sum of its proper divisors (251572839).

561215241 is a wasteful number, since it uses less digits than its factorization.

561215241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164916 (or 164913 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 561215241 is about 23689.9818699804. The cubic root of 561215241 is about 824.8528619139.

The spelling of 561215241 in words is "five hundred sixty-one million, two hundred fifteen thousand, two hundred forty-one".