103546721 has 2 divisors, whose sum is σ = 103546722. Its totient is φ = 103546720.

The previous prime is 103546717. The next prime is 103546739. The reversal of 103546721 is 127645301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 21390625 = 9064^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 103546721 - 2² = 103546717 is a prime.

It is a super-3 number, since 3×103546721³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103546741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51773360 + 51773361.

It is an arithmetic number, because the mean of its divisors is an integer number (51773361).

Almost surely, 2^103546721 is an apocalyptic number.

It is an amenable number.

103546721 is a deficient number, since it is larger than the sum of its proper divisors (1).

103546721 is an equidigital number, since it uses as much as digits as its factorization.

103546721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 103546721 is about 10175.7909274906. The cubic root of 103546721 is about 469.5827306055.

The spelling of 103546721 in words is "one hundred three million, five hundred forty-six thousand, seven hundred twenty-one".