43053409 has 6 divisors (see below), whose sum is σ = 50082594. Its totient is φ = 36902880.

The previous prime is 43053397. The next prime is 43053419. The reversal of 43053409 is 90435034.

It can be written as a sum of positive squares in only one way, i.e., 31047184 + 12006225 = 5572^2 + 3465^2 .

It is not a de Polignac number, because 43053409 - 2¹³ = 43045217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43053419) 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 in 5 ways as a sum of consecutive naturals, for example, 439272 + ... + 439369.

It is an arithmetic number, because the mean of its divisors is an integer number (8347099).

Almost surely, 2^43053409 is an apocalyptic number.

43053409 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

43053409 is a deficient number, since it is larger than the sum of its proper divisors (7029185).

43053409 is an equidigital number, since it uses as much as digits as its factorization.

43053409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878655 (or 878648 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 43053409 is about 6561.5096586075. The cubic root of 43053409 is about 350.4847948536.

The spelling of 43053409 in words is "forty-three million, fifty-three thousand, four hundred nine".