5421001 has 6 divisors (see below), whose sum is σ = 5602506. Its totient is φ = 5245200.

The previous prime is 5420983. The next prime is 5421007. The reversal of 5421001 is 1001245.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 15376 = 2325^2 + 124^2 .

It is not a de Polignac number, because 5421001 - 2⁵ = 5420969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5421007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1860 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (933751).

Almost surely, 2^5421001 is an apocalyptic number.

It is an amenable number.

5421001 is a deficient number, since it is larger than the sum of its proper divisors (181505).

5421001 is an equidigital number, since it uses as much as digits as its factorization.

5421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703 (or 5672 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 5421001 is about 2328.3043185975. The cubic root of 5421001 is about 175.6682045233.

Adding to 5421001 its reverse (1001245), we get a palindrome (6422246).

The spelling of 5421001 in words is "five million, four hundred twenty-one thousand, one".