5221815 has 16 divisors (see below), whose sum is σ = 8387808. Its totient is φ = 2774016.

The previous prime is 5221793. The next prime is 5221817. The reversal of 5221815 is 5181225.

It is not a de Polignac number, because 5221815 - 2⁹ = 5221303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4539 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (524238).

Almost surely, 2^5221815 is an apocalyptic number.

5221815 is a deficient number, since it is larger than the sum of its proper divisors (3165993).

5221815 is a wasteful number, since it uses less digits than its factorization.

5221815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378.

The product of its digits is 800, while the sum is 24.

The square root of 5221815 is about 2285.1290991977. The cubic root of 5221815 is about 173.4897523756.

The spelling of 5221815 in words is "five million, two hundred twenty-one thousand, eight hundred fifteen".