4531021 has 8 divisors (see below), whose sum is σ = 4989600. Its totient is φ = 4080240.

The previous prime is 4531003. The next prime is 4531049. The reversal of 4531021 is 1201354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4531021 - 2⁷ = 4530893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4530986 and 4531004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4531081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

Almost surely, 2^4531021 is an apocalyptic number.

It is an amenable number.

4531021 is a deficient number, since it is larger than the sum of its proper divisors (458579).

4531021 is a wasteful number, since it uses less digits than its factorization.

4531021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 4531021 is about 2128.6195056891. The cubic root of 4531021 is about 165.4748610210.

Adding to 4531021 its reverse (1201354), we get a palindrome (5732375).

It can be divided in two parts, 45310 and 21, that multiplied together give a triangular number (951510 = T₁₃₇₉).

The spelling of 4531021 in words is "four million, five hundred thirty-one thousand, twenty-one".