82059557 has 4 divisors (see below), whose sum is σ = 82168716. Its totient is φ = 81950400.

The previous prime is 82059553. The next prime is 82059581. The reversal of 82059557 is 75595028.

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 46430596 + 35628961 = 6814^2 + 5969^2 .

It is a cyclic number.

It is not a de Polignac number, because 82059557 - 2² = 82059553 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 (82059553) 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, 53444 + ... + 54957.

It is an arithmetic number, because the mean of its divisors is an integer number (20542179).

Almost surely, 2^82059557 is an apocalyptic number.

It is an amenable number.

82059557 is a deficient number, since it is larger than the sum of its proper divisors (109159).

82059557 is a wasteful number, since it uses less digits than its factorization.

82059557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109158.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 82059557 is about 9058.6730264427. The cubic root of 82059557 is about 434.5533037259.

The spelling of 82059557 in words is "eighty-two million, fifty-nine thousand, five hundred fifty-seven".