43244137 has 2 divisors, whose sum is σ = 43244138. Its totient is φ = 43244136.

The previous prime is 43244129. The next prime is 43244161. The reversal of 43244137 is 73144234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43243776 + 361 = 6576^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 43244137 - 2³ = 43244129 is a prime.

It is a super-3 number, since 3×43244137³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (43244167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21622068 + 21622069.

It is an arithmetic number, because the mean of its divisors is an integer number (21622069).

Almost surely, 2^43244137 is an apocalyptic number.

It is an amenable number.

43244137 is a deficient number, since it is larger than the sum of its proper divisors (1).

43244137 is an equidigital number, since it uses as much as digits as its factorization.

43244137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 28.

The square root of 43244137 is about 6576.0274482396. The cubic root of 43244137 is about 351.0015854778.

The spelling of 43244137 in words is "forty-three million, two hundred forty-four thousand, one hundred thirty-seven".