875021 has 4 divisors (see below), whose sum is σ = 1000032. Its totient is φ = 750012.

The previous prime is 875011. The next prime is 875027. The reversal of 875021 is 120578.

875021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120578 = 2 ⋅60289.

It is a cyclic number.

It is not a de Polignac number, because 875021 - 2⁶ = 874957 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 (875027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62495 + ... + 62508.

It is an arithmetic number, because the mean of its divisors is an integer number (250008).

2⁸⁷⁵⁰²¹ is an apocalyptic number.

It is an amenable number.

875021 is a deficient number, since it is larger than the sum of its proper divisors (125011).

875021 is a wasteful number, since it uses less digits than its factorization.

875021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125010.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 875021 is about 935.4255715983. The cubic root of 875021 is about 95.6473243050.

Adding to 875021 its reverse (120578), we get a palindrome (995599).

The spelling of 875021 in words is "eight hundred seventy-five thousand, twenty-one".