11553851 has 4 divisors (see below), whose sum is σ = 11575152. Its totient is φ = 11532552.

The previous prime is 11553847. The next prime is 11553859. The reversal of 11553851 is 15835511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15835511 = 1063 ⋅14897.

It is a cyclic number.

It is not a de Polignac number, because 11553851 - 2² = 11553847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9815 + ... + 10928.

It is an arithmetic number, because the mean of its divisors is an integer number (2893788).

Almost surely, 2^11553851 is an apocalyptic number.

11553851 is a deficient number, since it is larger than the sum of its proper divisors (21301).

11553851 is an equidigital number, since it uses as much as digits as its factorization.

11553851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21300.

The product of its digits is 3000, while the sum is 29.

The square root of 11553851 is about 3399.0956150129. The cubic root of 11553851 is about 226.0696459589.

The spelling of 11553851 in words is "eleven million, five hundred fifty-three thousand, eight hundred fifty-one".