5671021 has 8 divisors (see below), whose sum is σ = 5804640. Its totient is φ = 5538768.

The previous prime is 5671019. The next prime is 5671031. The reversal of 5671021 is 1201765.

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 5671021 - 2¹ = 5671019 is a prime.

It is a Duffinian number.

5671021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5670983 and 5671001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671031) 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, 16170 + ... + 16516.

It is an arithmetic number, because the mean of its divisors is an integer number (725580).

Almost surely, 2^5671021 is an apocalyptic number.

It is an amenable number.

5671021 is a deficient number, since it is larger than the sum of its proper divisors (133619).

5671021 is a wasteful number, since it uses less digits than its factorization.

5671021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 5671021 is about 2381.3905601560. The cubic root of 5671021 is about 178.3283611933.

Adding to 5671021 its reverse (1201765), we get a palindrome (6872786).

The spelling of 5671021 in words is "five million, six hundred seventy-one thousand, twenty-one".