9255661 has 4 divisors (see below), whose sum is σ = 9505852. Its totient is φ = 9005472.

The previous prime is 9255647. The next prime is 9255677. The reversal of 9255661 is 1665529.

It is a happy number.

9255661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6280036 + 2975625 = 2506^2 + 1725^2 .

It is a cyclic number.

It is not a de Polignac number, because 9255661 - 2²¹ = 7158509 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 (9255601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125040 + ... + 125113.

It is an arithmetic number, because the mean of its divisors is an integer number (2376463).

Almost surely, 2^9255661 is an apocalyptic number.

It is an amenable number.

9255661 is a deficient number, since it is larger than the sum of its proper divisors (250191).

9255661 is a wasteful number, since it uses less digits than its factorization.

9255661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250190.

The product of its digits is 16200, while the sum is 34.

The square root of 9255661 is about 3042.3117854684. The cubic root of 9255661 is about 209.9596369893.

The spelling of 9255661 in words is "nine million, two hundred fifty-five thousand, six hundred sixty-one".