257064211 has 2 divisors, whose sum is σ = 257064212. Its totient is φ = 257064210.

The previous prime is 257064173. The next prime is 257064217. The reversal of 257064211 is 112460752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257064211 - 2¹⁵ = 257031443 is a prime.

It is equal to p_14044348 and since 257064211 and 14044348 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 257064211.

It is not a weakly prime, because it can be changed into another prime (257064217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128532105 + 128532106.

It is an arithmetic number, because the mean of its divisors is an integer number (128532106).

Almost surely, 2^257064211 is an apocalyptic number.

257064211 is a deficient number, since it is larger than the sum of its proper divisors (1).

257064211 is an equidigital number, since it uses as much as digits as its factorization.

257064211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 257064211 is about 16033.2221028713. Note that the first 3 decimals coincide. The cubic root of 257064211 is about 635.8390635803.

The spelling of 257064211 in words is "two hundred fifty-seven million, sixty-four thousand, two hundred eleven".