163170541 has 2 divisors, whose sum is σ = 163170542. Its totient is φ = 163170540.

The previous prime is 163170467. The next prime is 163170563. The reversal of 163170541 is 145071361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159289641 + 3880900 = 12621^2 + 1970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163170541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163174541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81585270 + 81585271.

It is an arithmetic number, because the mean of its divisors is an integer number (81585271).

Almost surely, 2^163170541 is an apocalyptic number.

It is an amenable number.

163170541 is a deficient number, since it is larger than the sum of its proper divisors (1).

163170541 is an equidigital number, since it uses as much as digits as its factorization.

163170541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 163170541 is about 12773.8224897640. The cubic root of 163170541 is about 546.4459998648.

The spelling of 163170541 in words is "one hundred sixty-three million, one hundred seventy thousand, five hundred forty-one".