5995721 has 4 divisors (see below), whose sum is σ = 6202500. Its totient is φ = 5788944.

The previous prime is 5995699. The next prime is 5995727. The reversal of 5995721 is 1275995.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 5017600 = 989^2 + 2240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5995721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5995727) 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, 103346 + ... + 103403.

It is an arithmetic number, because the mean of its divisors is an integer number (1550625).

Almost surely, 2^5995721 is an apocalyptic number.

It is an amenable number.

5995721 is a deficient number, since it is larger than the sum of its proper divisors (206779).

5995721 is a wasteful number, since it uses less digits than its factorization.

5995721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206778.

The product of its digits is 28350, while the sum is 38.

The square root of 5995721 is about 2448.6161397818. The cubic root of 5995721 is about 181.6688520157.

The spelling of 5995721 in words is "five million, nine hundred ninety-five thousand, seven hundred twenty-one".