40275581 has 2 divisors, whose sum is σ = 40275582. Its totient is φ = 40275580.

The previous prime is 40275551. The next prime is 40275593. The reversal of 40275581 is 18557204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40119556 + 156025 = 6334^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 40275581 - 2⁶ = 40275517 is a prime.

It is a super-2 number, since 2×40275581² = 3244244849775122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40275511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20137790 + 20137791.

It is an arithmetic number, because the mean of its divisors is an integer number (20137791).

Almost surely, 2^40275581 is an apocalyptic number.

It is an amenable number.

40275581 is a deficient number, since it is larger than the sum of its proper divisors (1).

40275581 is an equidigital number, since it uses as much as digits as its factorization.

40275581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 40275581 is about 6346.3045152277. The cubic root of 40275581 is about 342.7787873439.

The spelling of 40275581 in words is "forty million, two hundred seventy-five thousand, five hundred eighty-one".