164363257 has 2 divisors, whose sum is σ = 164363258. Its totient is φ = 164363256.

The previous prime is 164363231. The next prime is 164363279. The reversal of 164363257 is 752363461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130210921 + 34152336 = 11411^2 + 5844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164363257 is a prime.

It is not a weakly prime, because it can be changed into another prime (164361257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82181628 + 82181629.

It is an arithmetic number, because the mean of its divisors is an integer number (82181629).

Almost surely, 2^164363257 is an apocalyptic number.

It is an amenable number.

164363257 is a deficient number, since it is larger than the sum of its proper divisors (1).

164363257 is an equidigital number, since it uses as much as digits as its factorization.

164363257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 164363257 is about 12820.4234329448. The cubic root of 164363257 is about 547.7742079104.

The spelling of 164363257 in words is "one hundred sixty-four million, three hundred sixty-three thousand, two hundred fifty-seven".