82195759 has 4 divisors (see below), whose sum is σ = 84417304. Its totient is φ = 79974216.

The previous prime is 82195741. The next prime is 82195769. The reversal of 82195759 is 95759128.

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 82195759 - 2¹¹ = 82193711 is a prime.

It is a super-2 number, since 2×82195759² = 13512285595172162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82195709) 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, 1110717 + ... + 1110790.

It is an arithmetic number, because the mean of its divisors is an integer number (21104326).

Almost surely, 2^82195759 is an apocalyptic number.

82195759 is a deficient number, since it is larger than the sum of its proper divisors (2221545).

82195759 is a wasteful number, since it uses less digits than its factorization.

82195759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221544.

The product of its digits is 226800, while the sum is 46.

The square root of 82195759 is about 9066.1876772985. The cubic root of 82195759 is about 434.7935938895.

It can be divided in two parts, 821 and 95759, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 82195759 in words is "eighty-two million, one hundred ninety-five thousand, seven hundred fifty-nine".