561335247 has 12 divisors (see below), whose sum is σ = 884528424. Its totient is φ = 340203120.

The previous prime is 561335239. The next prime is 561335249. The reversal of 561335247 is 742533165.

561335247 is a `hidden beast` number, since 5 + 613 + 35 + 2 + 4 + 7 = 666.

It is not a de Polignac number, because 561335247 - 2³ = 561335239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561335249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2834928 + ... + 2835125.

It is an arithmetic number, because the mean of its divisors is an integer number (73710702).

Almost surely, 2^561335247 is an apocalyptic number.

561335247 is a deficient number, since it is larger than the sum of its proper divisors (323193177).

561335247 is a wasteful number, since it uses less digits than its factorization.

561335247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670070 (or 5670067 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 561335247 is about 23692.5145773934. The cubic root of 561335247 is about 824.9116511452.

The spelling of 561335247 in words is "five hundred sixty-one million, three hundred thirty-five thousand, two hundred forty-seven".