43349057 has 4 divisors (see below), whose sum is σ = 43497300. Its totient is φ = 43200816.

The previous prime is 43349039. The next prime is 43349063. The reversal of 43349057 is 75094334.

It is a Cunningham number, because it is equal to 6584²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41011216 + 2337841 = 6404^2 + 1529^2 .

It is a cyclic number.

It is not a de Polignac number, because 43349057 - 2²⁰ = 42300481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43349857) 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 3 ways as a sum of consecutive naturals, for example, 73682 + ... + 74267.

It is an arithmetic number, because the mean of its divisors is an integer number (10874325).

Almost surely, 2^43349057 is an apocalyptic number.

It is an amenable number.

43349057 is a deficient number, since it is larger than the sum of its proper divisors (148243).

43349057 is a wasteful number, since it uses less digits than its factorization.

43349057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148242.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 43349057 is about 6584.0000759417. Note that the first 4 decimals coincide. The cubic root of 43349057 is about 351.2852257998.

The spelling of 43349057 in words is "forty-three million, three hundred forty-nine thousand, fifty-seven".