4010081 has 2 divisors, whose sum is σ = 4010082. Its totient is φ = 4010080.

The previous prime is 4010063. The next prime is 4010089. The reversal of 4010081 is 1800104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 1401856 = 1615^2 + 1184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4010081 is a prime.

It is a super-2 number, since 2×4010081² = 32161499253122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4010089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2005040 + 2005041.

It is an arithmetic number, because the mean of its divisors is an integer number (2005041).

Almost surely, 2^4010081 is an apocalyptic number.

It is an amenable number.

4010081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4010081 is an equidigital number, since it uses as much as digits as its factorization.

4010081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 4010081 is about 2002.5186640828. The cubic root of 4010081 is about 158.8733482409.

Adding to 4010081 its reverse (1800104), we get a palindrome (5810185).

The spelling of 4010081 in words is "four million, ten thousand, eighty-one".