4002541 has 4 divisors (see below), whose sum is σ = 4008672. Its totient is φ = 3996412.

The previous prime is 4002527. The next prime is 4002547. The reversal of 4002541 is 1452004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4002541 - 2¹⁵ = 3969773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951 + ... + 3436.

It is an arithmetic number, because the mean of its divisors is an integer number (1002168).

Almost surely, 2^4002541 is an apocalyptic number.

It is an amenable number.

4002541 is a deficient number, since it is larger than the sum of its proper divisors (6131).

4002541 is an equidigital number, since it uses as much as digits as its factorization.

4002541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6130.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4002541 is about 2000.6351491464. The cubic root of 4002541 is about 158.7737112990.

Adding to 4002541 its reverse (1452004), we get a palindrome (5454545).

The spelling of 4002541 in words is "four million, two thousand, five hundred forty-one".