11557047 has 8 divisors (see below), whose sum is σ = 15467760. Its totient is φ = 7675520.

The previous prime is 11557037. The next prime is 11557057. The reversal of 11557047 is 74075511.

11557047 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11557037) and next prime (11557057).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11557047 - 2⁶ = 11556983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6354 + ... + 7967.

It is an arithmetic number, because the mean of its divisors is an integer number (1933470).

Almost surely, 2^11557047 is an apocalyptic number.

11557047 is a deficient number, since it is larger than the sum of its proper divisors (3910713).

11557047 is a wasteful number, since it uses less digits than its factorization.

11557047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 11557047 is about 3399.5657075574. The cubic root of 11557047 is about 226.0904889943.

The spelling of 11557047 in words is "eleven million, five hundred fifty-seven thousand, forty-seven".