6454921 has 4 divisors (see below), whose sum is σ = 7041744. Its totient is φ = 5868100.

The previous prime is 6454901. The next prime is 6454937. The reversal of 6454921 is 1294546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6454921 - 2¹⁹ = 5930633 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

6454921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6454901) 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, 293395 + ... + 293416.

It is an arithmetic number, because the mean of its divisors is an integer number (1760436).

Almost surely, 2^6454921 is an apocalyptic number.

It is an amenable number.

6454921 is a deficient number, since it is larger than the sum of its proper divisors (586823).

6454921 is a wasteful number, since it uses less digits than its factorization.

6454921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586822.

The product of its digits is 8640, while the sum is 31.

The square root of 6454921 is about 2540.6536560500. The cubic root of 6454921 is about 186.1931261867.

The spelling of 6454921 in words is "six million, four hundred fifty-four thousand, nine hundred twenty-one".