11805057 has 12 divisors (see below), whose sum is σ = 18602064. Its totient is φ = 7154520.

The previous prime is 11805047. The next prime is 11805067. The reversal of 11805057 is 75050811.

It is an interprime number because it is at equal distance from previous prime (11805047) and next prime (11805067).

It is not a de Polignac number, because 11805057 - 2⁶ = 11804993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11805057.

It is not an unprimeable number, because it can be changed into a prime (11805047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59523 + ... + 59720.

It is an arithmetic number, because the mean of its divisors is an integer number (1550172).

Almost surely, 2^11805057 is an apocalyptic number.

It is an amenable number.

11805057 is a deficient number, since it is larger than the sum of its proper divisors (6797007).

11805057 is a wasteful number, since it uses less digits than its factorization.

11805057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119260 (or 119257 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 11805057 is about 3435.8488034254. The cubic root of 11805057 is about 227.6963293343.

Adding to 11805057 its reverse (75050811), we get a palindrome (86855868).

The spelling of 11805057 in words is "eleven million, eight hundred five thousand, fifty-seven".