83158715 has 4 divisors (see below), whose sum is σ = 99790464. Its totient is φ = 66526968.

The previous prime is 83158703. The next prime is 83158723. The reversal of 83158715 is 51785138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51785138 = 2 ⋅25892569.

It is a cyclic number.

It is not a de Polignac number, because 83158715 - 2²² = 78964411 is a prime.

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, 8315867 + ... + 8315876.

It is an arithmetic number, because the mean of its divisors is an integer number (24947616).

Almost surely, 2^83158715 is an apocalyptic number.

83158715 is a deficient number, since it is larger than the sum of its proper divisors (16631749).

83158715 is a wasteful number, since it uses less digits than its factorization.

83158715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16631748.

The product of its digits is 33600, while the sum is 38.

The square root of 83158715 is about 9119.1400362096. The cubic root of 83158715 is about 436.4849326955.

The spelling of 83158715 in words is "eighty-three million, one hundred fifty-eight thousand, seven hundred fifteen".