917425561 has 8 divisors (see below), whose sum is σ = 990581760. Its totient is φ = 844638672.

The previous prime is 917425549. The next prime is 917425591. The reversal of 917425561 is 165524719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 917425561 - 2⁷ = 917425433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (917425591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87151 + ... + 97108.

It is an arithmetic number, because the mean of its divisors is an integer number (123822720).

Almost surely, 2^917425561 is an apocalyptic number.

It is an amenable number.

917425561 is a deficient number, since it is larger than the sum of its proper divisors (73156199).

917425561 is a wasteful number, since it uses less digits than its factorization.

917425561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184655.

The product of its digits is 75600, while the sum is 40.

The square root of 917425561 is about 30289.0336755731. The cubic root of 917425561 is about 971.6807791998.

The spelling of 917425561 in words is "nine hundred seventeen million, four hundred twenty-five thousand, five hundred sixty-one".