82045457 has 4 divisors (see below), whose sum is σ = 88356660. Its totient is φ = 75734256.

The previous prime is 82045441. The next prime is 82045489. The reversal of 82045457 is 75454028.

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 23078416 + 58967041 = 4804^2 + 7679^2 .

It is not a de Polignac number, because 82045457 - 2⁴ = 82045441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84045457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3155582 + ... + 3155607.

It is an arithmetic number, because the mean of its divisors is an integer number (22089165).

Almost surely, 2^82045457 is an apocalyptic number.

It is an amenable number.

82045457 is a deficient number, since it is larger than the sum of its proper divisors (6311203).

82045457 is a wasteful number, since it uses less digits than its factorization.

82045457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311202.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 82045457 is about 9057.8947333252. The cubic root of 82045457 is about 434.5284130539.

The spelling of 82045457 in words is "eighty-two million, forty-five thousand, four hundred fifty-seven".