11271553 has 4 divisors (see below), whose sum is σ = 11290048. Its totient is φ = 11253060.

The previous prime is 11271529. The next prime is 11271571. The reversal of 11271553 is 35517211.

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.

It is a cyclic number.

It is not a de Polignac number, because 11271553 - 2⁵ = 11271521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11271593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8301 + ... + 9562.

It is an arithmetic number, because the mean of its divisors is an integer number (2822512).

Almost surely, 2^11271553 is an apocalyptic number.

It is an amenable number.

11271553 is a deficient number, since it is larger than the sum of its proper divisors (18495).

11271553 is an equidigital number, since it uses as much as digits as its factorization.

11271553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18494.

The product of its digits is 1050, while the sum is 25.

The square root of 11271553 is about 3357.3133604119. The cubic root of 11271553 is about 224.2132389581.

Adding to 11271553 its reverse (35517211), we get a palindrome (46788764).

The spelling of 11271553 in words is "eleven million, two hundred seventy-one thousand, five hundred fifty-three".