5643401 has 4 divisors (see below), whose sum is σ = 5706900. Its totient is φ = 5579904.

The previous prime is 5643389. The next prime is 5643413. The reversal of 5643401 is 1043465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5643389) and next prime (5643413).

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 4946176 = 835^2 + 2224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5643401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5643301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31616 + ... + 31793.

It is an arithmetic number, because the mean of its divisors is an integer number (1426725).

Almost surely, 2^5643401 is an apocalyptic number.

It is an amenable number.

5643401 is a deficient number, since it is larger than the sum of its proper divisors (63499).

5643401 is an equidigital number, since it uses as much as digits as its factorization.

5643401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63498.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 5643401 is about 2375.5843491655. The cubic root of 5643401 is about 178.0383812366.

Adding to 5643401 its reverse (1043465), we get a palindrome (6686866).

The spelling of 5643401 in words is "five million, six hundred forty-three thousand, four hundred one".