40811761 has 2 divisors, whose sum is σ = 40811762. Its totient is φ = 40811760.

The previous prime is 40811741. The next prime is 40811767. The reversal of 40811761 is 16711804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 1874161 = 6240^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 40811761 - 2⁷ = 40811633 is a prime.

It is a super-2 number, since 2×40811761² = 3331199671842242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40811767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20405880 + 20405881.

It is an arithmetic number, because the mean of its divisors is an integer number (20405881).

Almost surely, 2^40811761 is an apocalyptic number.

It is an amenable number.

40811761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40811761 is an equidigital number, since it uses as much as digits as its factorization.

40811761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 40811761 is about 6388.4083307190. The cubic root of 40811761 is about 344.2931997526.

It can be divided in two parts, 40 and 811761, that added together give a square (811801 = 901²).

The spelling of 40811761 in words is "forty million, eight hundred eleven thousand, seven hundred sixty-one".