82281149 has 4 divisors (see below), whose sum is σ = 85118460. Its totient is φ = 79443840.

The previous prime is 82281113. The next prime is 82281163. The reversal of 82281149 is 94118228.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55428025 + 26853124 = 7445^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 82281149 - 2⁸ = 82280893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82281169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418612 + ... + 1418669.

It is an arithmetic number, because the mean of its divisors is an integer number (21279615).

Almost surely, 2^82281149 is an apocalyptic number.

It is an amenable number.

82281149 is a deficient number, since it is larger than the sum of its proper divisors (2837311).

82281149 is a wasteful number, since it uses less digits than its factorization.

82281149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837310.

The product of its digits is 9216, while the sum is 35.

The square root of 82281149 is about 9070.8957110089. The cubic root of 82281149 is about 434.9441052064.

The spelling of 82281149 in words is "eighty-two million, two hundred eighty-one thousand, one hundred forty-nine".