10543909 has 2 divisors, whose sum is σ = 10543910. Its totient is φ = 10543908.

The previous prime is 10543889. The next prime is 10543943. The reversal of 10543909 is 90934501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10543009 + 900 = 3247^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 10543909 - 2⁷ = 10543781 is a prime.

It is a super-2 number, since 2×10543909² = 222348034000562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10544909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5271954 + 5271955.

It is an arithmetic number, because the mean of its divisors is an integer number (5271955).

Almost surely, 2^10543909 is an apocalyptic number.

It is an amenable number.

10543909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10543909 is an equidigital number, since it uses as much as digits as its factorization.

10543909 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 31.

The square root of 10543909 is about 3247.1385865097. The cubic root of 10543909 is about 219.2807710778.

The spelling of 10543909 in words is "ten million, five hundred forty-three thousand, nine hundred nine".