4021533 has 12 divisors (see below), whose sum is σ = 5834400. Its totient is φ = 2669256.

The previous prime is 4021531. The next prime is 4021543. The reversal of 4021533 is 3351204.

It is not a de Polignac number, because 4021533 - 2¹ = 4021531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1518 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (486200).

Almost surely, 2^4021533 is an apocalyptic number.

It is an amenable number.

4021533 is a deficient number, since it is larger than the sum of its proper divisors (1812867).

4021533 is a wasteful number, since it uses less digits than its factorization.

4021533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 4021533 is about 2005.3760245899. The cubic root of 4021533 is about 159.0244414782.

Adding to 4021533 its reverse (3351204), we get a palindrome (7372737).

It can be divided in two parts, 4021 and 533, that added together give a palindrome (4554).

The spelling of 4021533 in words is "four million, twenty-one thousand, five hundred thirty-three".