43525091 has 2 divisors, whose sum is σ = 43525092. Its totient is φ = 43525090.

The previous prime is 43525087. The next prime is 43525123. The reversal of 43525091 is 19052534.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43525091 - 2² = 43525087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43525991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21762545 + 21762546.

It is an arithmetic number, because the mean of its divisors is an integer number (21762546).

Almost surely, 2^43525091 is an apocalyptic number.

43525091 is a deficient number, since it is larger than the sum of its proper divisors (1).

43525091 is an equidigital number, since it uses as much as digits as its factorization.

43525091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 43525091 is about 6597.3548487254. The cubic root of 43525091 is about 351.7600890834.

The spelling of 43525091 in words is "forty-three million, five hundred twenty-five thousand, ninety-one".