11213577 has 6 divisors (see below), whose sum is σ = 16197402. Its totient is φ = 7475712.

The previous prime is 11213567. The next prime is 11213597. The reversal of 11213577 is 77531211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11128896 + 84681 = 3336^2 + 291^2 .

It is not a de Polignac number, because 11213577 - 2⁶ = 11213513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11213577.

It is not an unprimeable number, because it can be changed into a prime (11213567) 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 5 ways as a sum of consecutive naturals, for example, 622968 + ... + 622985.

It is an arithmetic number, because the mean of its divisors is an integer number (2699567).

Almost surely, 2^11213577 is an apocalyptic number.

It is an amenable number.

11213577 is a deficient number, since it is larger than the sum of its proper divisors (4983825).

11213577 is a wasteful number, since it uses less digits than its factorization.

11213577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245959 (or 1245956 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 11213577 is about 3348.6679441235. The cubic root of 11213577 is about 223.8281592888.

Adding to 11213577 its reverse (77531211), we get a palindrome (88744788).

It can be divided in two parts, 112 and 13577, that added together give a square (13689 = 117²).

The spelling of 11213577 in words is "eleven million, two hundred thirteen thousand, five hundred seventy-seven".