82101079 has 4 divisors (see below), whose sum is σ = 82272960. Its totient is φ = 81929200.

The previous prime is 82101077. The next prime is 82101083. The reversal of 82101079 is 97010128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82101079 - 2¹ = 82101077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82101073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85222 + ... + 86179.

It is an arithmetic number, because the mean of its divisors is an integer number (20568240).

Almost surely, 2^82101079 is an apocalyptic number.

82101079 is a deficient number, since it is larger than the sum of its proper divisors (171881).

82101079 is a wasteful number, since it uses less digits than its factorization.

82101079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171880.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 82101079 is about 9060.9645733774. The cubic root of 82101079 is about 434.6265857846.

The spelling of 82101079 in words is "eighty-two million, one hundred one thousand, seventy-nine".