11323557 has 42 divisors (see below), whose sum is σ = 19811718. Its totient is φ = 6450192.

The previous prime is 11323549. The next prime is 11323561. The reversal of 11323557 is 75532311.

It can be written as a sum of positive squares in only one way, i.e., 7001316 + 4322241 = 2646^2 + 2079^2 .

It is not a de Polignac number, because 11323557 - 2³ = 11323549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 11323557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323057) 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 41 ways as a sum of consecutive naturals, for example, 35563 + ... + 35879.

Almost surely, 2^11323557 is an apocalyptic number.

It is an amenable number.

11323557 is a deficient number, since it is larger than the sum of its proper divisors (8488161).

11323557 is an frugal number, since it uses more digits than its factorization.

11323557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 327 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 11323557 is about 3365.0493309906. The cubic root of 11323557 is about 224.5575304401.

Adding to 11323557 its reverse (75532311), we get a palindrome (86855868).

The spelling of 11323557 in words is "eleven million, three hundred twenty-three thousand, five hundred fifty-seven".