43125857 has 2 divisors, whose sum is σ = 43125858. Its totient is φ = 43125856.

The previous prime is 43125847. The next prime is 43125881. The reversal of 43125857 is 75852134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 732736 = 6511^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 43125857 - 2⁶ = 43125793 is a prime.

It is not a weakly prime, because it can be changed into another prime (43125827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21562928 + 21562929.

It is an arithmetic number, because the mean of its divisors is an integer number (21562929).

Almost surely, 2^43125857 is an apocalyptic number.

It is an amenable number.

43125857 is a deficient number, since it is larger than the sum of its proper divisors (1).

43125857 is an equidigital number, since it uses as much as digits as its factorization.

43125857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 43125857 is about 6567.0280188225. The cubic root of 43125857 is about 350.6812771112.

The spelling of 43125857 in words is "forty-three million, one hundred twenty-five thousand, eight hundred fifty-seven".