561810417 has 16 divisors (see below), whose sum is σ = 885613440. Its totient is φ = 309964032.

The previous prime is 561810401. The next prime is 561810419. The reversal of 561810417 is 714018165.

It is a happy number.

It is not a de Polignac number, because 561810417 - 2⁴ = 561810401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561810419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460648 + ... + 461865.

It is an arithmetic number, because the mean of its divisors is an integer number (55350840).

Almost surely, 2^561810417 is an apocalyptic number.

It is an amenable number.

561810417 is a deficient number, since it is larger than the sum of its proper divisors (323803023).

561810417 is a wasteful number, since it uses less digits than its factorization.

561810417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922552.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 561810417 is about 23702.5403068954. The cubic root of 561810417 is about 825.1443479288.

The spelling of 561810417 in words is "five hundred sixty-one million, eight hundred ten thousand, four hundred seventeen".