4545021 has 8 divisors (see below), whose sum is σ = 6526240. Its totient is φ = 2796912.

The previous prime is 4545017. The next prime is 4545031. The reversal of 4545021 is 1205454.

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

It is not a de Polignac number, because 4545021 - 2² = 4545017 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 (4545011) 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, 58231 + ... + 58308.

It is an arithmetic number, because the mean of its divisors is an integer number (815780).

Almost surely, 2^4545021 is an apocalyptic number.

It is an amenable number.

4545021 is a deficient number, since it is larger than the sum of its proper divisors (1981219).

4545021 is a wasteful number, since it uses less digits than its factorization.

4545021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116555.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 4545021 is about 2131.9054857099. The cubic root of 4545021 is about 165.6451144907.

The spelling of 4545021 in words is "four million, five hundred forty-five thousand, twenty-one".