41578081 has 2 divisors, whose sum is σ = 41578082. Its totient is φ = 41578080.

The previous prime is 41578079. The next prime is 41578093. The reversal of 41578081 is 18087514.

41578081 = 4559² + 4560².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 20784481 = 4560^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 41578081 - 2¹ = 41578079 is a prime.

It is a super-2 number, since 2×41578081² = 3457473639285122, which contains 22 as substring.

Together with 41578079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41578021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20789040 + 20789041.

It is an arithmetic number, because the mean of its divisors is an integer number (20789041).

Almost surely, 2^41578081 is an apocalyptic number.

41578081 is the 4560-th centered square number.

It is an amenable number.

41578081 is a deficient number, since it is larger than the sum of its proper divisors (1).

41578081 is an equidigital number, since it uses as much as digits as its factorization.

41578081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 41578081 is about 6448.1067764112. The cubic root of 41578081 is about 346.4347753713.

The spelling of 41578081 in words is "forty-one million, five hundred seventy-eight thousand, eighty-one".