5215217 has 6 divisors (see below), whose sum is σ = 6066738. Its totient is φ = 4470144.

The previous prime is 5215211. The next prime is 5215229. The reversal of 5215217 is 7125125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4800481 + 414736 = 2191^2 + 644^2 .

It is not a de Polignac number, because 5215217 - 2⁴ = 5215201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5215192 and 5215201.

It is not an unprimeable number, because it can be changed into a prime (5215211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53168 + ... + 53265.

It is an arithmetic number, because the mean of its divisors is an integer number (1011123).

Almost surely, 2^5215217 is an apocalyptic number.

It is an amenable number.

5215217 is a deficient number, since it is larger than the sum of its proper divisors (851521).

5215217 is a wasteful number, since it uses less digits than its factorization.

5215217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106447 (or 106440 counting only the distinct ones).

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

The square root of 5215217 is about 2283.6849607597. The cubic root of 5215217 is about 173.4166508553.

The spelling of 5215217 in words is "five million, two hundred fifteen thousand, two hundred seventeen".