561045247 has 6 divisors (see below), whose sum is σ = 652644528. Its totient is φ = 480895884.

The previous prime is 561045241. The next prime is 561045253. The reversal of 561045247 is 742540165.

It is an interprime number because it is at equal distance from previous prime (561045241) and next prime (561045253).

It is not a de Polignac number, because 561045247 - 2¹¹ = 561043199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561045241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5724903 + ... + 5725000.

It is an arithmetic number, because the mean of its divisors is an integer number (108774088).

Almost surely, 2^561045247 is an apocalyptic number.

561045247 is a deficient number, since it is larger than the sum of its proper divisors (91599281).

561045247 is a wasteful number, since it uses less digits than its factorization.

561045247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11449917 (or 11449910 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 561045247 is about 23686.3937103139. The cubic root of 561045247 is about 824.7695699270.

The spelling of 561045247 in words is "five hundred sixty-one million, forty-five thousand, two hundred forty-seven".