5721000 has 64 divisors (see below), whose sum is σ = 17858880. Its totient is φ = 1524800.

The previous prime is 5720999. The next prime is 5721011. The reversal of 5721000 is 1275.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2047 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (279045).

Almost surely, 2^5721000 is an apocalyptic number.

5721000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5721000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8929440).

5721000 is an abundant number, since it is smaller than the sum of its proper divisors (12137880).

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

5721000 is a wasteful number, since it uses less digits than its factorization.

5721000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 5721000 is about 2391.8611999863. The cubic root of 5721000 is about 178.8507020553.

Adding to 5721000 its reverse (1275), we get a palindrome (5722275).

The spelling of 5721000 in words is "five million, seven hundred twenty-one thousand".