5721456 has 80 divisors (see below), whose sum is σ = 16311456. Its totient is φ = 1717248.

The previous prime is 5721437. The next prime is 5721461. The reversal of 5721456 is 6541275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32986 + ... + 33158.

Almost surely, 2^5721456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5721456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8155728).

5721456 is an abundant number, since it is smaller than the sum of its proper divisors (10590000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5721456 is a wasteful number, since it uses less digits than its factorization.

5721456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 244 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 5721456 is about 2391.9565213440. The cubic root of 5721456 is about 178.8554537743.

The spelling of 5721456 in words is "five million, seven hundred twenty-one thousand, four hundred fifty-six".