5721731 has 4 divisors (see below), whose sum is σ = 5766912. Its totient is φ = 5676552.

The previous prime is 5721719. The next prime is 5721743. The reversal of 5721731 is 1371275.

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

It is an interprime number because it is at equal distance from previous prime (5721719) and next prime (5721743).

It is a cyclic number.

It is not a de Polignac number, because 5721731 - 2¹⁰ = 5720707 is a prime.

It is a super-2 number, since 2×5721731² = 65476411272722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5721731.

It is not an unprimeable number, because it can be changed into a prime (5721031) 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, 22400 + ... + 22653.

It is an arithmetic number, because the mean of its divisors is an integer number (1441728).

Almost surely, 2^5721731 is an apocalyptic number.

5721731 is a deficient number, since it is larger than the sum of its proper divisors (45181).

5721731 is a wasteful number, since it uses less digits than its factorization.

5721731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45180.

The product of its digits is 1470, while the sum is 26.

The square root of 5721731 is about 2392.0140049757. The cubic root of 5721731 is about 178.8583192723.

The spelling of 5721731 in words is "five million, seven hundred twenty-one thousand, seven hundred thirty-one".