5721215 has 4 divisors (see below), whose sum is σ = 6865464. Its totient is φ = 4576968.

The previous prime is 5721211. The next prime is 5721241. The reversal of 5721215 is 5121275.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5721215 - 2² = 5721211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721211) 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, 572117 + ... + 572126.

It is an arithmetic number, because the mean of its divisors is an integer number (1716366).

Almost surely, 2^5721215 is an apocalyptic number.

5721215 is a deficient number, since it is larger than the sum of its proper divisors (1144249).

5721215 is a wasteful number, since it uses less digits than its factorization.

5721215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144248.

The product of its digits is 700, while the sum is 23.

The square root of 5721215 is about 2391.9061436436. The cubic root of 5721215 is about 178.8529424806.

The spelling of 5721215 in words is "five million, seven hundred twenty-one thousand, two hundred fifteen".