11405857 has 2 divisors, whose sum is σ = 11405858. Its totient is φ = 11405856.

The previous prime is 11405837. The next prime is 11405873. The reversal of 11405857 is 75850411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11350161 + 55696 = 3369^2 + 236^2 .

It is a cyclic number.

It is not a de Polignac number, because 11405857 - 2¹⁹ = 10881569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11405837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702928 + 5702929.

It is an arithmetic number, because the mean of its divisors is an integer number (5702929).

Almost surely, 2^11405857 is an apocalyptic number.

It is an amenable number.

11405857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11405857 is an equidigital number, since it uses as much as digits as its factorization.

11405857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 11405857 is about 3377.2558386951. The cubic root of 11405857 is about 225.1002483320.

The spelling of 11405857 in words is "eleven million, four hundred five thousand, eight hundred fifty-seven".