11157049 has 4 divisors (see below), whose sum is σ = 11813364. Its totient is φ = 10500736.

The previous prime is 11156989. The next prime is 11157053. The reversal of 11157049 is 94075111.

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 6175225 + 4981824 = 2485^2 + 2232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11157049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11157079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328132 + ... + 328165.

It is an arithmetic number, because the mean of its divisors is an integer number (2953341).

Almost surely, 2^11157049 is an apocalyptic number.

It is an amenable number.

11157049 is a deficient number, since it is larger than the sum of its proper divisors (656315).

11157049 is an equidigital number, since it uses as much as digits as its factorization.

11157049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656314.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 11157049 is about 3340.2169091243. The cubic root of 11157049 is about 223.4514172204.

The spelling of 11157049 in words is "eleven million, one hundred fifty-seven thousand, forty-nine".