11911057 has 2 divisors, whose sum is σ = 11911058. Its totient is φ = 11911056.

The previous prime is 11911027. The next prime is 11911063. The reversal of 11911057 is 75011911.

11911057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7568001 + 4343056 = 2751^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 11911057 - 2¹⁵ = 11878289 is a prime.

It is not a weakly prime, because it can be changed into another prime (11911027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5955528 + 5955529.

It is an arithmetic number, because the mean of its divisors is an integer number (5955529).

Almost surely, 2^11911057 is an apocalyptic number.

It is an amenable number.

11911057 is a deficient number, since it is larger than the sum of its proper divisors (1).

11911057 is an equidigital number, since it uses as much as digits as its factorization.

11911057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 25.

The square root of 11911057 is about 3451.2399221149. The cubic root of 11911057 is about 228.3758101427.

Adding to 11911057 its reverse (75011911), we get a palindrome (86922968).

The spelling of 11911057 in words is "eleven million, nine hundred eleven thousand, fifty-seven".