6450401 has 4 divisors (see below), whose sum is σ = 6465732. Its totient is φ = 6435072.

The previous prime is 6450391. The next prime is 6450413. The reversal of 6450401 is 1040546.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 2972176 = 1865^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450401 - 2⁶ = 6450337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6450491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7016 + ... + 7881.

It is an arithmetic number, because the mean of its divisors is an integer number (1616433).

Almost surely, 2^6450401 is an apocalyptic number.

It is an amenable number.

6450401 is a deficient number, since it is larger than the sum of its proper divisors (15331).

6450401 is a wasteful number, since it uses less digits than its factorization.

6450401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 6450401 is about 2539.7639654110. The cubic root of 6450401 is about 186.1496560215.

Adding to 6450401 its reverse (1040546), we get a palindrome (7490947).

The spelling of 6450401 in words is "six million, four hundred fifty thousand, four hundred one".