11447157 has 4 divisors (see below), whose sum is σ = 15262880. Its totient is φ = 7631436.

The previous prime is 11447147. The next prime is 11447207. The reversal of 11447157 is 75174411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11447157 - 2¹⁰ = 11446133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11447147) 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, 1907857 + ... + 1907862.

It is an arithmetic number, because the mean of its divisors is an integer number (3815720).

Almost surely, 2^11447157 is an apocalyptic number.

It is an amenable number.

11447157 is a deficient number, since it is larger than the sum of its proper divisors (3815723).

11447157 is an equidigital number, since it uses as much as digits as its factorization.

11447157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815722.

The product of its digits is 3920, while the sum is 30.

The square root of 11447157 is about 3383.3647453386. The cubic root of 11447157 is about 225.3716130614.

The spelling of 11447157 in words is "eleven million, four hundred forty-seven thousand, one hundred fifty-seven".