5408021 has 2 divisors, whose sum is σ = 5408022. Its totient is φ = 5408020.

The previous prime is 5408017. The next prime is 5408047. The reversal of 5408021 is 1208045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3845521 + 1562500 = 1961^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 5408021 - 2² = 5408017 is a prime.

It is a super-2 number, since 2×5408021² = 58493382272882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5407984 and 5408002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5402021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2704010 + 2704011.

It is an arithmetic number, because the mean of its divisors is an integer number (2704011).

Almost surely, 2^5408021 is an apocalyptic number.

It is an amenable number.

5408021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5408021 is an equidigital number, since it uses as much as digits as its factorization.

5408021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 5408021 is about 2325.5152117327. The cubic root of 5408021 is about 175.5278863056.

The spelling of 5408021 in words is "five million, four hundred eight thousand, twenty-one".