213055057 has 2 divisors, whose sum is σ = 213055058. Its totient is φ = 213055056.

The previous prime is 213055019. The next prime is 213055069. The reversal of 213055057 is 750550312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176464656 + 36590401 = 13284^2 + 6049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213055057 is a prime.

It is not a weakly prime, because it can be changed into another prime (213055097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106527528 + 106527529.

It is an arithmetic number, because the mean of its divisors is an integer number (106527529).

Almost surely, 2^213055057 is an apocalyptic number.

It is an amenable number.

213055057 is a deficient number, since it is larger than the sum of its proper divisors (1).

213055057 is an equidigital number, since it uses as much as digits as its factorization.

213055057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 213055057 is about 14596.4056191927. The cubic root of 213055057 is about 597.2607138101.

It can be divided in two parts, 21305 and 5057, that added together give a palindrome (26362).

The spelling of 213055057 in words is "two hundred thirteen million, fifty-five thousand, fifty-seven".