43432057 has 2 divisors, whose sum is σ = 43432058. Its totient is φ = 43432056.

The previous prime is 43432019. The next prime is 43432091. The reversal of 43432057 is 75023434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 254016 = 6571^2 + 504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43432057 is a prime.

It is not a weakly prime, because it can be changed into another prime (43432757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21716028 + 21716029.

It is an arithmetic number, because the mean of its divisors is an integer number (21716029).

Almost surely, 2^43432057 is an apocalyptic number.

It is an amenable number.

43432057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43432057 is an equidigital number, since it uses as much as digits as its factorization.

43432057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 43432057 is about 6590.3002207790. The cubic root of 43432057 is about 351.5092836138.

It can be divided in two parts, 4343 and 2057, that added together give a square (6400 = 80²).

The spelling of 43432057 in words is "forty-three million, four hundred thirty-two thousand, fifty-seven".