4275021 has 4 divisors (see below), whose sum is σ = 5700032. Its totient is φ = 2850012.

The previous prime is 4275013. The next prime is 4275023. The reversal of 4275021 is 1205724.

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 not a de Polignac number, because 4275021 - 2³ = 4275013 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4275023) 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 3 ways as a sum of consecutive naturals, for example, 712501 + ... + 712506.

It is an arithmetic number, because the mean of its divisors is an integer number (1425008).

Almost surely, 2^4275021 is an apocalyptic number.

It is an amenable number.

4275021 is a deficient number, since it is larger than the sum of its proper divisors (1425011).

4275021 is a wasteful number, since it uses less digits than its factorization.

4275021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425010.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 4275021 is about 2067.6123911410. The cubic root of 4275021 is about 162.2978440785.

The spelling of 4275021 in words is "four million, two hundred seventy-five thousand, twenty-one".