82550281 has 8 divisors (see below), whose sum is σ = 90208224. Its totient is φ = 74917920.

The previous prime is 82550267. The next prime is 82550291. The reversal of 82550281 is 18205528.

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

It is not a de Polignac number, because 82550281 - 2¹⁷ = 82419209 is a prime.

It is a super-2 number, since 2×82550281² = 13629097786357922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82550291) 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, 706 + ... + 12868.

It is an arithmetic number, because the mean of its divisors is an integer number (11276028).

Almost surely, 2^82550281 is an apocalyptic number.

It is an amenable number.

82550281 is a deficient number, since it is larger than the sum of its proper divisors (7657943).

82550281 is a wasteful number, since it uses less digits than its factorization.

82550281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 82550281 is about 9085.7185186423. The cubic root of 82550281 is about 435.4178061807.

The spelling of 82550281 in words is "eighty-two million, five hundred fifty thousand, two hundred eighty-one".