163561033 has 2 divisors, whose sum is σ = 163561034. Its totient is φ = 163561032.

The previous prime is 163561019. The next prime is 163561091. The reversal of 163561033 is 330165361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119311929 + 44249104 = 10923^2 + 6652^2 .

It is a cyclic number.

It is not a de Polignac number, because 163561033 - 2⁵ = 163561001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163560992 and 163561010.

It is not a weakly prime, because it can be changed into another prime (163561133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81780516 + 81780517.

It is an arithmetic number, because the mean of its divisors is an integer number (81780517).

Almost surely, 2^163561033 is an apocalyptic number.

It is an amenable number.

163561033 is a deficient number, since it is larger than the sum of its proper divisors (1).

163561033 is an equidigital number, since it uses as much as digits as its factorization.

163561033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 163561033 is about 12789.0982090216. The cubic root of 163561033 is about 546.8815621438.

The spelling of 163561033 in words is "one hundred sixty-three million, five hundred sixty-one thousand, thirty-three".