43255957 has 2 divisors, whose sum is σ = 43255958. Its totient is φ = 43255956.

The previous prime is 43255903. The next prime is 43255967. The reversal of 43255957 is 75955234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41912676 + 1343281 = 6474^2 + 1159^2 .

It is a cyclic number.

It is not a de Polignac number, because 43255957 - 2⁷ = 43255829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43255967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21627978 + 21627979.

It is an arithmetic number, because the mean of its divisors is an integer number (21627979).

Almost surely, 2^43255957 is an apocalyptic number.

It is an amenable number.

43255957 is a deficient number, since it is larger than the sum of its proper divisors (1).

43255957 is an equidigital number, since it uses as much as digits as its factorization.

43255957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 40.

The square root of 43255957 is about 6576.9261057123. The cubic root of 43255957 is about 351.0335625355.

The spelling of 43255957 in words is "forty-three million, two hundred fifty-five thousand, nine hundred fifty-seven".