4014521 has 6 divisors (see below), whose sum is σ = 4670010. Its totient is φ = 3440976.

The previous prime is 4014503. The next prime is 4014559. The reversal of 4014521 is 1254104.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 1073296 = 1715^2 + 1036^2 .

It is not a de Polignac number, because 4014521 - 2⁶ = 4014457 is a prime.

It is a super-2 number, since 2×4014521² = 32232757718882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4014521.

It is not an unprimeable number, because it can be changed into a prime (4014421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40916 + ... + 41013.

It is an arithmetic number, because the mean of its divisors is an integer number (778335).

Almost surely, 2^4014521 is an apocalyptic number.

It is an amenable number.

4014521 is a deficient number, since it is larger than the sum of its proper divisors (655489).

4014521 is an equidigital number, since it uses as much as digits as its factorization.

4014521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81943 (or 81936 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 4014521 is about 2003.6269612880. The cubic root of 4014521 is about 158.9319619767.

Subtracting from 4014521 its product of nonzero digits (160), we obtain a triangular number (4014361 = T₂₈₃₃).

Adding to 4014521 its reverse (1254104), we get a palindrome (5268625).

The spelling of 4014521 in words is "four million, fourteen thousand, five hundred twenty-one".