11616553 has 6 divisors (see below), whose sum is σ = 12579054. Its totient is φ = 10722816.

The previous prime is 11616551. The next prime is 11616589. The reversal of 11616553 is 35561611.

It can be written as a sum of positive squares in 3 ways, for example, as 110889 + 11505664 = 333^2 + 3392^2 .

It is not a de Polignac number, because 11616553 - 2¹ = 11616551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11616551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34200 + ... + 34537.

It is an arithmetic number, because the mean of its divisors is an integer number (2096509).

Almost surely, 2^11616553 is an apocalyptic number.

11616553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11616553 is a deficient number, since it is larger than the sum of its proper divisors (962501).

11616553 is an equidigital number, since it uses as much as digits as its factorization.

11616553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68763 (or 68750 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 11616553 is about 3408.3064709618. The cubic root of 11616553 is about 226.4778634923.

The spelling of 11616553 in words is "eleven million, six hundred sixteen thousand, five hundred fifty-three".