83315515 has 4 divisors (see below), whose sum is σ = 99978624. Its totient is φ = 66652408.

The previous prime is 83315501. The next prime is 83315539. The reversal of 83315515 is 51551338.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51551338 = 2 ⋅25775669.

It is a cyclic number.

It is not a de Polignac number, because 83315515 - 2⁹ = 83315003 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8331547 + ... + 8331556.

It is an arithmetic number, because the mean of its divisors is an integer number (24994656).

Almost surely, 2^83315515 is an apocalyptic number.

83315515 is a deficient number, since it is larger than the sum of its proper divisors (16663109).

83315515 is a wasteful number, since it uses less digits than its factorization.

83315515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663108.

The product of its digits is 9000, while the sum is 31.

The square root of 83315515 is about 9127.7332892674. The cubic root of 83315515 is about 436.7590986532.

The spelling of 83315515 in words is "eighty-three million, three hundred fifteen thousand, five hundred fifteen".