82553278 has 8 divisors (see below), whose sum is σ = 123913080. Its totient is φ = 41248920.

The previous prime is 82553267. The next prime is 82553281. The reversal of 82553278 is 87235528.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82553278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9913 + ... + 16228.

It is an arithmetic number, because the mean of its divisors is an integer number (15489135).

Almost surely, 2^82553278 is an apocalyptic number.

82553278 is a deficient number, since it is larger than the sum of its proper divisors (41359802).

82553278 is a wasteful number, since it uses less digits than its factorization.

82553278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27722.

The product of its digits is 134400, while the sum is 40.

The square root of 82553278 is about 9085.8834463138. The cubic root of 82553278 is about 435.4230754193.

The spelling of 82553278 in words is "eighty-two million, five hundred fifty-three thousand, two hundred seventy-eight".