40054081 has 2 divisors, whose sum is σ = 40054082. Its totient is φ = 40054080.

The previous prime is 40054051. The next prime is 40054099. The reversal of 40054081 is 18045004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 16200625 = 4884^2 + 4025^2 .

It is a cyclic number.

It is not a de Polignac number, because 40054081 - 2⁹ = 40053569 is a prime.

It is a super-2 number, since 2×40054081² = 3208658809509122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40054051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027040 + 20027041.

It is an arithmetic number, because the mean of its divisors is an integer number (20027041).

Almost surely, 2^40054081 is an apocalyptic number.

It is an amenable number.

40054081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40054081 is an equidigital number, since it uses as much as digits as its factorization.

40054081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40054081 is about 6328.8293546279. The cubic root of 40054081 is about 342.1492486075.

Adding to 40054081 its reverse (18045004), we get a palindrome (58099085).

The spelling of 40054081 in words is "forty million, fifty-four thousand, eighty-one".