9455561 has 4 divisors (see below), whose sum is σ = 9461712. Its totient is φ = 9449412.

The previous prime is 9455513. The next prime is 9455581. The reversal of 9455561 is 1655549.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1655549 = 7 ⋅236507.

It is a cyclic number.

It is not a de Polignac number, because 9455561 - 2⁶ = 9455497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9455581) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526 + ... + 4608.

It is an arithmetic number, because the mean of its divisors is an integer number (2365428).

Almost surely, 2^9455561 is an apocalyptic number.

It is an amenable number.

9455561 is a deficient number, since it is larger than the sum of its proper divisors (6151).

9455561 is a wasteful number, since it uses less digits than its factorization.

9455561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150.

The product of its digits is 27000, while the sum is 35.

The square root of 9455561 is about 3074.9895934783. The cubic root of 9455561 is about 211.4604247592.

It can be divided in two parts, 94 and 55561, that added together give a palindrome (55655).

The spelling of 9455561 in words is "nine million, four hundred fifty-five thousand, five hundred sixty-one".