164675257 has 2 divisors, whose sum is σ = 164675258. Its totient is φ = 164675256.

The previous prime is 164675227. The next prime is 164675279. The reversal of 164675257 is 752576461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164121721 + 553536 = 12811^2 + 744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164675257 is a prime.

It is not a weakly prime, because it can be changed into another prime (164675207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82337628 + 82337629.

It is an arithmetic number, because the mean of its divisors is an integer number (82337629).

Almost surely, 2^164675257 is an apocalyptic number.

It is an amenable number.

164675257 is a deficient number, since it is larger than the sum of its proper divisors (1).

164675257 is an equidigital number, since it uses as much as digits as its factorization.

164675257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 164675257 is about 12832.5857487881. The cubic root of 164675257 is about 548.1205901256.

The spelling of 164675257 in words is "one hundred sixty-four million, six hundred seventy-five thousand, two hundred fifty-seven".