82511219 has 8 divisors (see below), whose sum is σ = 94712160. Its totient is φ = 70413696.

The previous prime is 82511153. The next prime is 82511227. The reversal of 82511219 is 91211528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82511219 - 2¹⁶ = 82445683 is a prime.

It is a super-2 number, since 2×82511219² = 13616202521731922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82511191 and 82511200.

It is not an unprimeable number, because it can be changed into a prime (82511719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24134 + ... + 27339.

It is an arithmetic number, because the mean of its divisors is an integer number (11839020).

Almost surely, 2^82511219 is an apocalyptic number.

82511219 is a deficient number, since it is larger than the sum of its proper divisors (12200941).

82511219 is a wasteful number, since it uses less digits than its factorization.

82511219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51709.

The product of its digits is 1440, while the sum is 29.

The square root of 82511219 is about 9083.5686269219. The cubic root of 82511219 is about 435.3491168375.

The spelling of 82511219 in words is "eighty-two million, five hundred eleven thousand, two hundred nineteen".