211105057 has 2 divisors, whose sum is σ = 211105058. Its totient is φ = 211105056.

The previous prime is 211105039. The next prime is 211105061. The reversal of 211105057 is 750501112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205033761 + 6071296 = 14319^2 + 2464^2 .

It is a cyclic number.

It is not a de Polignac number, because 211105057 - 2²⁷ = 76887329 is a prime.

It is not a weakly prime, because it can be changed into another prime (211105087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105552528 + 105552529.

It is an arithmetic number, because the mean of its divisors is an integer number (105552529).

Almost surely, 2^211105057 is an apocalyptic number.

It is an amenable number.

211105057 is a deficient number, since it is larger than the sum of its proper divisors (1).

211105057 is an equidigital number, since it uses as much as digits as its factorization.

211105057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 211105057 is about 14529.4548073904. The cubic root of 211105057 is about 595.4329706436.

Adding to 211105057 its reverse (750501112), we get a palindrome (961606169).

The spelling of 211105057 in words is "two hundred eleven million, one hundred five thousand, fifty-seven".