5727921 has 4 divisors (see below), whose sum is σ = 7637232. Its totient is φ = 3818612.

The previous prime is 5727919. The next prime is 5727923. The reversal of 5727921 is 1297275.

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 an interprime number because it is at equal distance from previous prime (5727919) and next prime (5727923).

It is a cyclic number.

It is not a de Polignac number, because 5727921 - 2¹ = 5727919 is a prime.

It is a D-number.

5727921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5727923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954651 + ... + 954656.

It is an arithmetic number, because the mean of its divisors is an integer number (1909308).

Almost surely, 2^5727921 is an apocalyptic number.

It is an amenable number.

5727921 is a deficient number, since it is larger than the sum of its proper divisors (1909311).

5727921 is a wasteful number, since it uses less digits than its factorization.

5727921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909310.

The product of its digits is 8820, while the sum is 33.

The square root of 5727921 is about 2393.3075439650. The cubic root of 5727921 is about 178.9227947483.

The spelling of 5727921 in words is "five million, seven hundred twenty-seven thousand, nine hundred twenty-one".