5278921 has 8 divisors (see below), whose sum is σ = 5400000. Its totient is φ = 5159280.

The previous prime is 5278913. The next prime is 5278927. The reversal of 5278921 is 1298725.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5278921 - 2³ = 5278913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

5278921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5278927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10330 + ... + 10828.

It is an arithmetic number, because the mean of its divisors is an integer number (675000).

Almost surely, 2^5278921 is an apocalyptic number.

It is an amenable number.

5278921 is a deficient number, since it is larger than the sum of its proper divisors (121079).

5278921 is a wasteful number, since it uses less digits than its factorization.

5278921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its digits is 10080, while the sum is 34.

The square root of 5278921 is about 2297.5902593805. The cubic root of 5278921 is about 174.1198913890.

The spelling of 5278921 in words is "five million, two hundred seventy-eight thousand, nine hundred twenty-one".