9561455121 has 8 divisors (see below), whose sum is σ = 13188214080. Its totient is φ = 6154499792.

The previous prime is 9561455119. The next prime is 9561455131. The reversal of 9561455121 is 1215541659.

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 9561455121 - 2¹ = 9561455119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9561455121.

It is not an unprimeable number, because it can be changed into a prime (9561455131) 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, 54950805 + ... + 54950978.

It is an arithmetic number, because the mean of its divisors is an integer number (1648526760).

Almost surely, 2^9561455121 is an apocalyptic number.

It is an amenable number.

9561455121 is a deficient number, since it is larger than the sum of its proper divisors (3626758959).

9561455121 is a wasteful number, since it uses less digits than its factorization.

9561455121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109901815.

The product of its digits is 54000, while the sum is 39.

The square root of 9561455121 is about 97782.6933613510. The cubic root of 9561455121 is about 2122.4688753082.

The spelling of 9561455121 in words is "nine billion, five hundred sixty-one million, four hundred fifty-five thousand, one hundred twenty-one".