5515215 has 16 divisors (see below), whose sum is σ = 9013248. Its totient is φ = 2878496.

The previous prime is 5515207. The next prime is 5515217. The reversal of 5515215 is 5125155.

It is a cyclic number.

It is not a de Polignac number, because 5515215 - 2³ = 5515207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3207 + ... + 4616.

It is an arithmetic number, because the mean of its divisors is an integer number (563328).

Almost surely, 2^5515215 is an apocalyptic number.

5515215 is a deficient number, since it is larger than the sum of its proper divisors (3498033).

5515215 is a wasteful number, since it uses less digits than its factorization.

5515215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878.

The product of its digits is 1250, while the sum is 24.

The square root of 5515215 is about 2348.4494884924. The cubic root of 5515215 is about 176.6800373568.

The spelling of 5515215 in words is "five million, five hundred fifteen thousand, two hundred fifteen".