10216515 has 32 divisors (see below), whose sum is σ = 17104896. Its totient is φ = 5201280.

The previous prime is 10216513. The next prime is 10216519. The reversal of 10216515 is 51561201.

10216515 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10216515 - 2¹ = 10216513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10216491 and 10216500.

It is not an unprimeable number, because it can be changed into a prime (10216513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58969 + ... + 59141.

It is an arithmetic number, because the mean of its divisors is an integer number (534528).

Almost surely, 2^10216515 is an apocalyptic number.

10216515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10216515 is a deficient number, since it is larger than the sum of its proper divisors (6888381).

10216515 is a wasteful number, since it uses less digits than its factorization.

10216515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 10216515 is about 3196.3283623558. The cubic root of 10216515 is about 216.9872715817.

Adding to 10216515 its reverse (51561201), we get a palindrome (61777716).

It can be divided in two parts, 10216 and 515, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10216515 in words is "ten million, two hundred sixteen thousand, five hundred fifteen".