82550813 has 8 divisors (see below), whose sum is σ = 83786880. Its totient is φ = 81319680.

The previous prime is 82550803. The next prime is 82550837. The reversal of 82550813 is 31805528.

It is a happy number.

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 82550813 - 2⁸ = 82550557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82550813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82550803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44678 + ... + 46488.

It is an arithmetic number, because the mean of its divisors is an integer number (10473360).

Almost surely, 2^82550813 is an apocalyptic number.

It is an amenable number.

82550813 is a deficient number, since it is larger than the sum of its proper divisors (1236067).

82550813 is a wasteful number, since it uses less digits than its factorization.

82550813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 82550813 is about 9085.7477953111. The cubic root of 82550813 is about 435.4187415370.

The spelling of 82550813 in words is "eighty-two million, five hundred fifty thousand, eight hundred thirteen".