82065554 has 4 divisors (see below), whose sum is σ = 123098334. Its totient is φ = 41032776.

The previous prime is 82065539. The next prime is 82065601. The reversal of 82065554 is 45556028.

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

It can be written as a sum of positive squares in only one way, i.e., 62837329 + 19228225 = 7927^2 + 4385^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20516387 + ... + 20516390.

Almost surely, 2^82065554 is an apocalyptic number.

82065554 is a deficient number, since it is larger than the sum of its proper divisors (41032780).

82065554 is a wasteful number, since it uses less digits than its factorization.

82065554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41032779.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 82065554 is about 9059.0040291414. The cubic root of 82065554 is about 434.5638893411.

The spelling of 82065554 in words is "eighty-two million, sixty-five thousand, five hundred fifty-four".