163513573 has 2 divisors, whose sum is σ = 163513574. Its totient is φ = 163513572.

The previous prime is 163513501. The next prime is 163513589. The reversal of 163513573 is 375315361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160959969 + 2553604 = 12687^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 163513573 - 2⁹ = 163513061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163513073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81756786 + 81756787.

It is an arithmetic number, because the mean of its divisors is an integer number (81756787).

Almost surely, 2^163513573 is an apocalyptic number.

It is an amenable number.

163513573 is a deficient number, since it is larger than the sum of its proper divisors (1).

163513573 is an equidigital number, since it uses as much as digits as its factorization.

163513573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 34.

The square root of 163513573 is about 12787.2425878295. The cubic root of 163513573 is about 546.8286613820.

The spelling of 163513573 in words is "one hundred sixty-three million, five hundred thirteen thousand, five hundred seventy-three".