5978021 has 8 divisors (see below), whose sum is σ = 6854400. Its totient is φ = 5107248.

The previous prime is 5978003. The next prime is 5978047. The reversal of 5978021 is 1208795.

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 5978021 - 2⁶ = 5977957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5978051) 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, 1220 + ... + 3666.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^5978021 is an apocalyptic number.

It is an amenable number.

5978021 is a deficient number, since it is larger than the sum of its proper divisors (876379).

5978021 is a wasteful number, since it uses less digits than its factorization.

5978021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 5978021 is about 2444.9991820040. Note that the first 3 decimals coincide. The cubic root of 5978021 is about 181.4899072826.

The spelling of 5978021 in words is "five million, nine hundred seventy-eight thousand, twenty-one".