82775801 has 4 divisors (see below), whose sum is σ = 83283792. Its totient is φ = 82267812.

The previous prime is 82775783. The next prime is 82775807. The reversal of 82775801 is 10857728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82775801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82775807) by changing a digit.

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, 253751 + ... + 254076.

It is an arithmetic number, because the mean of its divisors is an integer number (20820948).

Almost surely, 2^82775801 is an apocalyptic number.

It is an amenable number.

82775801 is a deficient number, since it is larger than the sum of its proper divisors (507991).

82775801 is a wasteful number, since it uses less digits than its factorization.

82775801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507990.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 82775801 is about 9098.1207400210. The cubic root of 82775801 is about 435.8139531817.

The spelling of 82775801 in words is "eighty-two million, seven hundred seventy-five thousand, eight hundred one".