11057861 has 2 divisors, whose sum is σ = 11057862. Its totient is φ = 11057860.

The previous prime is 11057843. The next prime is 11057863. The reversal of 11057861 is 16875011.

11057861 is digitally balanced in base 2, 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., 10956100 + 101761 = 3310^2 + 319^2 .

It is an emirp because it is prime and its reverse (16875011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11057861 - 2¹⁴ = 11041477 is a prime.

Together with 11057863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11057863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528930 + 5528931.

It is an arithmetic number, because the mean of its divisors is an integer number (5528931).

Almost surely, 2^11057861 is an apocalyptic number.

It is an amenable number.

11057861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11057861 is an equidigital number, since it uses as much as digits as its factorization.

11057861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 11057861 is about 3325.3362236021. The cubic root of 11057861 is about 222.7872719152.

The spelling of 11057861 in words is "eleven million, fifty-seven thousand, eight hundred sixty-one".