82765551 has 8 divisors (see below), whose sum is σ = 120386304. Its totient is φ = 50160920.

The previous prime is 82765549. The next prime is 82765589. The reversal of 82765551 is 15556728.

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 82765551 - 2¹ = 82765549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82765531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253991 + ... + 1254056.

It is an arithmetic number, because the mean of its divisors is an integer number (15048288).

Almost surely, 2^82765551 is an apocalyptic number.

82765551 is a deficient number, since it is larger than the sum of its proper divisors (37620753).

82765551 is a wasteful number, since it uses less digits than its factorization.

82765551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508061.

The product of its digits is 84000, while the sum is 39.

The square root of 82765551 is about 9097.5574194396. The cubic root of 82765551 is about 435.7959637155.

The spelling of 82765551 in words is "eighty-two million, seven hundred sixty-five thousand, five hundred fifty-one".