11155057 has 4 divisors (see below), whose sum is σ = 11307940. Its totient is φ = 11002176.

The previous prime is 11155051. The next prime is 11155061. The reversal of 11155057 is 75055111.

11155057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4999696 + 6155361 = 2236^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155057 - 2³ = 11155049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155051) 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, 76332 + ... + 76477.

It is an arithmetic number, because the mean of its divisors is an integer number (2826985).

Almost surely, 2^11155057 is an apocalyptic number.

It is an amenable number.

11155057 is a deficient number, since it is larger than the sum of its proper divisors (152883).

11155057 is an equidigital number, since it uses as much as digits as its factorization.

11155057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152882.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 11155057 is about 3339.9187115857. The cubic root of 11155057 is about 223.4381179535.

The spelling of 11155057 in words is "eleven million, one hundred fifty-five thousand, fifty-seven".