82505146 has 4 divisors (see below), whose sum is σ = 123757722. Its totient is φ = 41252572.

The previous prime is 82505107. The next prime is 82505173. The reversal of 82505146 is 64150528.

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., 80802121 + 1703025 = 8989^2 + 1305^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 20626285 + ... + 20626288.

Almost surely, 2^82505146 is an apocalyptic number.

82505146 is a deficient number, since it is larger than the sum of its proper divisors (41252576).

82505146 is a wasteful number, since it uses less digits than its factorization.

82505146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41252575.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 82505146 is about 9083.2343358520. The cubic root of 82505146 is about 435.3384357039.

The spelling of 82505146 in words is "eighty-two million, five hundred five thousand, one hundred forty-six".