11457047 has 4 divisors (see below), whose sum is σ = 13093776. Its totient is φ = 9820320.

The previous prime is 11457041. The next prime is 11457109. The reversal of 11457047 is 74075411.

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

It is a cyclic number.

It is not a de Polignac number, because 11457047 - 2¹⁰ = 11456023 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 (11457041) 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, 818354 + ... + 818367.

It is an arithmetic number, because the mean of its divisors is an integer number (3273444).

Almost surely, 2^11457047 is an apocalyptic number.

11457047 is a deficient number, since it is larger than the sum of its proper divisors (1636729).

11457047 is an equidigital number, since it uses as much as digits as its factorization.

11457047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636728.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 11457047 is about 3384.8259925733. The cubic root of 11457047 is about 225.4364991478.

It can be divided in two parts, 1145 and 7047, that added together give a 13-th power (8192 = 2¹³).

The spelling of 11457047 in words is "eleven million, four hundred fifty-seven thousand, forty-seven".