9601551 has 16 divisors (see below), whose sum is σ = 14304000. Its totient is φ = 6365304.

The previous prime is 9601547. The next prime is 9601561. The reversal of 9601551 is 1551069.

9601551 is a `hidden beast` number, since 9 + 601 + 5 + 51 = 666.

It is not a de Polignac number, because 9601551 - 2² = 9601547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9601531) 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, 4480 + ... + 6266.

It is an arithmetic number, because the mean of its divisors is an integer number (894000).

Almost surely, 2^9601551 is an apocalyptic number.

9601551 is a deficient number, since it is larger than the sum of its proper divisors (4702449).

9601551 is a wasteful number, since it uses less digits than its factorization.

9601551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 9601551 is about 3098.6369584061. The cubic root of 9601551 is about 212.5431589385.

The spelling of 9601551 in words is "nine million, six hundred one thousand, five hundred fifty-one".