4345021 has 8 divisors (see below), whose sum is σ = 4567904. Its totient is φ = 4127760.

The previous prime is 4344997. The next prime is 4345031. The reversal of 4345021 is 1205434.

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 4345021 - 2¹⁷ = 4213949 is a prime.

It is a Duffinian number.

4345021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4345021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4345031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (570988).

Almost surely, 2^4345021 is an apocalyptic number.

It is an amenable number.

4345021 is a deficient number, since it is larger than the sum of its proper divisors (222883).

4345021 is a wasteful number, since it uses less digits than its factorization.

4345021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4345021 is about 2084.4713958220. The cubic root of 4345021 is about 163.1788844950.

The spelling of 4345021 in words is "four million, three hundred forty-five thousand, twenty-one".