210970057 has 2 divisors, whose sum is σ = 210970058. Its totient is φ = 210970056.

The previous prime is 210970043. The next prime is 210970061. The reversal of 210970057 is 750079012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188540361 + 22429696 = 13731^2 + 4736^2 .

It is a cyclic number.

It is not a de Polignac number, because 210970057 - 2²⁷ = 76752329 is a prime.

It is equal to p_11652097 and since 210970057 and 11652097 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (210970027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105485028 + 105485029.

It is an arithmetic number, because the mean of its divisors is an integer number (105485029).

Almost surely, 2^210970057 is an apocalyptic number.

It is an amenable number.

210970057 is a deficient number, since it is larger than the sum of its proper divisors (1).

210970057 is an equidigital number, since it uses as much as digits as its factorization.

210970057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 210970057 is about 14524.8083292001. The cubic root of 210970057 is about 595.3060186999.

The spelling of 210970057 in words is "two hundred ten million, nine hundred seventy thousand, fifty-seven".