82504881 has 12 divisors (see below), whose sum is σ = 121709952. Its totient is φ = 53832696.

The previous prime is 82504843. The next prime is 82504883. The reversal of 82504881 is 18840528.

It is not a de Polignac number, because 82504881 - 2⁶ = 82504817 is a prime.

It is a super-2 number, since 2×82504881² = 13614110777648322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82504883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97101 + ... + 97946.

It is an arithmetic number, because the mean of its divisors is an integer number (10142496).

Almost surely, 2^82504881 is an apocalyptic number.

It is an amenable number.

82504881 is a deficient number, since it is larger than the sum of its proper divisors (39205071).

82504881 is a wasteful number, since it uses less digits than its factorization.

82504881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195100 (or 195097 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 82504881 is about 9083.2197485253. The cubic root of 82504881 is about 435.3379696125.

It can be divided in two parts, 8250 and 4881, that added together give a palindrome (13131).

The spelling of 82504881 in words is "eighty-two million, five hundred four thousand, eight hundred eighty-one".