11550961 has 16 divisors (see below), whose sum is σ = 12513600. Its totient is φ = 10640448.

The previous prime is 11550953. The next prime is 11550983. The reversal of 11550961 is 16905511.

It is not a de Polignac number, because 11550961 - 2³ = 11550953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550901) 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, 73495 + ... + 73651.

It is an arithmetic number, because the mean of its divisors is an integer number (782100).

Almost surely, 2^11550961 is an apocalyptic number.

It is an amenable number.

11550961 is a deficient number, since it is larger than the sum of its proper divisors (962639).

11550961 is a wasteful number, since it uses less digits than its factorization.

11550961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11550961 is about 3398.6704753477. The cubic root of 11550961 is about 226.0507952236.

It can be divided in two parts, 115 and 50961, that added together give a square (51076 = 226²).

The spelling of 11550961 in words is "eleven million, five hundred fifty thousand, nine hundred sixty-one".