163057397 has 2 divisors, whose sum is σ = 163057398. Its totient is φ = 163057396.

The previous prime is 163057339. The next prime is 163057417. The reversal of 163057397 is 793750361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84805681 + 78251716 = 9209^2 + 8846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163057397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163257397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81528698 + 81528699.

It is an arithmetic number, because the mean of its divisors is an integer number (81528699).

Almost surely, 2^163057397 is an apocalyptic number.

It is an amenable number.

163057397 is a deficient number, since it is larger than the sum of its proper divisors (1).

163057397 is an equidigital number, since it uses as much as digits as its factorization.

163057397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 41.

The square root of 163057397 is about 12769.3929769586. The cubic root of 163057397 is about 546.3196670479.

The spelling of 163057397 in words is "one hundred sixty-three million, fifty-seven thousand, three hundred ninety-seven".