4220515 has 16 divisors (see below), whose sum is σ = 5644800. Its totient is φ = 3007872.

The previous prime is 4220509. The next prime is 4220519. The reversal of 4220515 is 5150224.

It is a cyclic number.

It is not a de Polignac number, because 4220515 - 2⁵ = 4220483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4220492 and 4220501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220519) 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, 766 + ... + 3004.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^4220515 is an apocalyptic number.

4220515 is a deficient number, since it is larger than the sum of its proper divisors (1424285).

4220515 is a wasteful number, since it uses less digits than its factorization.

4220515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4220515 is about 2054.3892036321. The cubic root of 4220515 is about 161.6051324016.

Adding to 4220515 its reverse (5150224), we get a palindrome (9370739).

The spelling of 4220515 in words is "four million, two hundred twenty thousand, five hundred fifteen".