82530317 has 4 divisors (see below), whose sum is σ = 85376220. Its totient is φ = 79684416.

The previous prime is 82530311. The next prime is 82530361. The reversal of 82530317 is 71303528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25542916 + 56987401 = 5054^2 + 7549^2 .

It is a cyclic number.

It is not a de Polignac number, because 82530317 - 2¹⁴ = 82513933 is a prime.

It is a super-2 number, since 2×82530317² = 13622506448240978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2845873 = 82530317 / (8 + 2 + 5 + 3 + 0 + 3 + 1 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82530317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82530311) 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, 1422908 + ... + 1422965.

It is an arithmetic number, because the mean of its divisors is an integer number (21344055).

Almost surely, 2^82530317 is an apocalyptic number.

It is an amenable number.

82530317 is a deficient number, since it is larger than the sum of its proper divisors (2845903).

82530317 is a wasteful number, since it uses less digits than its factorization.

82530317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845902.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 82530317 is about 9084.6198049230. The cubic root of 82530317 is about 435.3827027996.

The spelling of 82530317 in words is "eighty-two million, five hundred thirty thousand, three hundred seventeen".