7216515 has 12 divisors (see below), whose sum is σ = 12508704. Its totient is φ = 3848784.

The previous prime is 7216513. The next prime is 7216537. The reversal of 7216515 is 5156127.

7216515 is a `hidden beast` number, since 7 + 2 + 1 + 651 + 5 = 666.

7216515 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7216515 - 2¹ = 7216513 is a prime.

7216515 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7216513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80139 + ... + 80228.

It is an arithmetic number, because the mean of its divisors is an integer number (1042392).

Almost surely, 2^7216515 is an apocalyptic number.

7216515 is a deficient number, since it is larger than the sum of its proper divisors (5292189).

7216515 is a wasteful number, since it uses less digits than its factorization.

7216515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160378 (or 160375 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 7216515 is about 2686.3571988848. The cubic root of 7216515 is about 193.2454036005.

The spelling of 7216515 in words is "seven million, two hundred sixteen thousand, five hundred fifteen".