105494561 has 2 divisors, whose sum is σ = 105494562. Its totient is φ = 105494560.

The previous prime is 105494551. The next prime is 105494591. The reversal of 105494561 is 165494501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104939536 + 555025 = 10244^2 + 745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105494561 is a prime.

It is a super-2 number, since 2×105494561² = 22258204801165442, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (105494531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52747280 + 52747281.

It is an arithmetic number, because the mean of its divisors is an integer number (52747281).

Almost surely, 2^105494561 is an apocalyptic number.

It is an amenable number.

105494561 is a deficient number, since it is larger than the sum of its proper divisors (1).

105494561 is an equidigital number, since it uses as much as digits as its factorization.

105494561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 105494561 is about 10271.0545222971. The cubic root of 105494561 is about 472.5089325784.

The spelling of 105494561 in words is "one hundred five million, four hundred ninety-four thousand, five hundred sixty-one".