40571761 has 2 divisors, whose sum is σ = 40571762. Its totient is φ = 40571760.

The previous prime is 40571749. The next prime is 40571813. The reversal of 40571761 is 16717504.

40571761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30459361 + 10112400 = 5519^2 + 3180^2 .

It is a cyclic number.

It is not a de Polignac number, because 40571761 - 2⁹ = 40571249 is a prime.

It is a super-2 number, since 2×40571761² = 3292135581282242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40571711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20285880 + 20285881.

It is an arithmetic number, because the mean of its divisors is an integer number (20285881).

Almost surely, 2^40571761 is an apocalyptic number.

It is an amenable number.

40571761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40571761 is an equidigital number, since it uses as much as digits as its factorization.

40571761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 40571761 is about 6369.5966120313. The cubic root of 40571761 is about 343.6169823192.

The spelling of 40571761 in words is "forty million, five hundred seventy-one thousand, seven hundred sixty-one".