5727981 has 8 divisors (see below), whose sum is σ = 8728384. Its totient is φ = 3273120.

The previous prime is 5727979. The next prime is 5727991. The reversal of 5727981 is 1897275.

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

It is not a de Polignac number, because 5727981 - 2¹ = 5727979 is a prime.

It is a super-2 number, since 2×5727981² = 65619532672722, which contains 22 as substring.

5727981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5727971) 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, 136360 + ... + 136401.

It is an arithmetic number, because the mean of its divisors is an integer number (1091048).

Almost surely, 2^5727981 is an apocalyptic number.

It is an amenable number.

5727981 is a deficient number, since it is larger than the sum of its proper divisors (3000403).

5727981 is a wasteful number, since it uses less digits than its factorization.

5727981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272771.

The product of its digits is 35280, while the sum is 39.

The square root of 5727981 is about 2393.3200788862. The cubic root of 5727981 is about 178.9234194852.

The spelling of 5727981 in words is "five million, seven hundred twenty-seven thousand, nine hundred eighty-one".