4081015 has 4 divisors (see below), whose sum is σ = 4897224. Its totient is φ = 3264808.

The previous prime is 4081013. The next prime is 4081019. The reversal of 4081015 is 5101804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4081015 - 2¹ = 4081013 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4080983 and 4081001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408097 + ... + 408106.

It is an arithmetic number, because the mean of its divisors is an integer number (1224306).

Almost surely, 2^4081015 is an apocalyptic number.

4081015 is a deficient number, since it is larger than the sum of its proper divisors (816209).

4081015 is an equidigital number, since it uses as much as digits as its factorization.

4081015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816208.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 4081015 is about 2020.1522219872. The cubic root of 4081015 is about 159.8046443857.

Adding to 4081015 its reverse (5101804), we get a palindrome (9182819).

The spelling of 4081015 in words is "four million, eighty-one thousand, fifteen".