11662553 has 16 divisors (see below), whose sum is σ = 13994880. Its totient is φ = 9507456.

The previous prime is 11662549. The next prime is 11662577. The reversal of 11662553 is 35526611.

11662553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11662553 - 2² = 11662549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11662513) 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, 14426 + ... + 15212.

It is an arithmetic number, because the mean of its divisors is an integer number (874680).

Almost surely, 2^11662553 is an apocalyptic number.

It is an amenable number.

11662553 is a deficient number, since it is larger than the sum of its proper divisors (2332327).

11662553 is an equidigital number, since it uses as much as digits as its factorization.

11662553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 5400, while the sum is 29.

The square root of 11662553 is about 3415.0480230884. The cubic root of 11662553 is about 226.7764104772.

The spelling of 11662553 in words is "eleven million, six hundred sixty-two thousand, five hundred fifty-three".