578401021 has 16 divisors (see below), whose sum is σ = 672215040. Its totient is φ = 492127920.

The previous prime is 578401001. The next prime is 578401039. The reversal of 578401021 is 120104875.

It is a cyclic number.

It is not a de Polignac number, because 578401021 - 2⁹ = 578400509 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 (578401001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676 + ... + 34018.

It is an arithmetic number, because the mean of its divisors is an integer number (42013440).

Almost surely, 2^578401021 is an apocalyptic number.

It is an amenable number.

578401021 is a deficient number, since it is larger than the sum of its proper divisors (93814019).

578401021 is a wasteful number, since it uses less digits than its factorization.

578401021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33456.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 578401021 is about 24049.9692515396. The cubic root of 578401021 is about 833.1880202980.

Adding to 578401021 its reverse (120104875), we get a palindrome (698505896).

The spelling of 578401021 in words is "five hundred seventy-eight million, four hundred one thousand, twenty-one".