105161489 has 2 divisors, whose sum is σ = 105161490. Its totient is φ = 105161488.

The previous prime is 105161479. The next prime is 105161533. The reversal of 105161489 is 984161501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104387089 + 774400 = 10217^2 + 880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105161489 is a prime.

It is a super-2 number, since 2×105161489² = 22117877537394242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105161479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52580744 + 52580745.

It is an arithmetic number, because the mean of its divisors is an integer number (52580745).

Almost surely, 2^105161489 is an apocalyptic number.

It is an amenable number.

105161489 is a deficient number, since it is larger than the sum of its proper divisors (1).

105161489 is an equidigital number, since it uses as much as digits as its factorization.

105161489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 105161489 is about 10254.8275948453. The cubic root of 105161489 is about 472.0111330923.

The spelling of 105161489 in words is "one hundred five million, one hundred sixty-one thousand, four hundred eighty-nine".