40575091 has 2 divisors, whose sum is σ = 40575092. Its totient is φ = 40575090.

The previous prime is 40575077. The next prime is 40575097. The reversal of 40575091 is 19057504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40575091 - 2⁹ = 40574579 is a prime.

It is not a weakly prime, because it can be changed into another prime (40575097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20287545 + 20287546.

It is an arithmetic number, because the mean of its divisors is an integer number (20287546).

Almost surely, 2^40575091 is an apocalyptic number.

40575091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40575091 is an equidigital number, since it uses as much as digits as its factorization.

40575091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 40575091 is about 6369.8580046968. The cubic root of 40575091 is about 343.6263830552.

The spelling of 40575091 in words is "forty million, five hundred seventy-five thousand, ninety-one".