11575577 has 4 divisors (see below), whose sum is σ = 12466020. Its totient is φ = 10685136.

The previous prime is 11575567. The next prime is 11575609. The reversal of 11575577 is 77557511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 678976 + 10896601 = 824^2 + 3301^2 .

It is a cyclic number.

It is not a de Polignac number, because 11575577 - 2⁶ = 11575513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11575577.

It is not an unprimeable number, because it can be changed into a prime (11575507) 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, 445202 + ... + 445227.

It is an arithmetic number, because the mean of its divisors is an integer number (3116505).

Almost surely, 2^11575577 is an apocalyptic number.

It is an amenable number.

11575577 is a deficient number, since it is larger than the sum of its proper divisors (890443).

11575577 is an equidigital number, since it uses as much as digits as its factorization.

11575577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890442.

The product of its digits is 42875, while the sum is 38.

The square root of 11575577 is about 3402.2899641271. The cubic root of 11575577 is about 226.2112585905.

The spelling of 11575577 in words is "eleven million, five hundred seventy-five thousand, five hundred seventy-seven".