5718921 has 8 divisors (see below), whose sum is σ = 8211840. Its totient is φ = 3519312.

The previous prime is 5718901. The next prime is 5718959. The reversal of 5718921 is 1298175.

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

It is not a de Polignac number, because 5718921 - 2⁷ = 5718793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5718901) 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 7 ways as a sum of consecutive naturals, for example, 73281 + ... + 73358.

It is an arithmetic number, because the mean of its divisors is an integer number (1026480).

Almost surely, 2^5718921 is an apocalyptic number.

It is an amenable number.

5718921 is a deficient number, since it is larger than the sum of its proper divisors (2492919).

5718921 is a wasteful number, since it uses less digits than its factorization.

5718921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146655.

The product of its digits is 5040, while the sum is 33.

The square root of 5718921 is about 2391.4265616991. The cubic root of 5718921 is about 178.8290347676.

The spelling of 5718921 in words is "five million, seven hundred eighteen thousand, nine hundred twenty-one".