11851457 has 4 divisors (see below), whose sum is σ = 11861040. Its totient is φ = 11841876.

The previous prime is 11851451. The next prime is 11851481. The reversal of 11851457 is 75415811.

11851457 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11851457 - 2⁸ = 11851201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11851451) 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, 2603 + ... + 5520.

It is an arithmetic number, because the mean of its divisors is an integer number (2965260).

Almost surely, 2^11851457 is an apocalyptic number.

It is an amenable number.

11851457 is a deficient number, since it is larger than the sum of its proper divisors (9583).

11851457 is an equidigital number, since it uses as much as digits as its factorization.

11851457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582.

The product of its digits is 5600, while the sum is 32.

The square root of 11851457 is about 3442.5945157686. The cubic root of 11851457 is about 227.9942609102.

The spelling of 11851457 in words is "eleven million, eight hundred fifty-one thousand, four hundred fifty-seven".