82500057 has 24 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 52128384.

The previous prime is 82500053. The next prime is 82500059. The reversal of 82500057 is 75000528.

It is a happy number.

It is not a de Polignac number, because 82500057 - 2² = 82500053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82500057.

It is not an unprimeable number, because it can be changed into a prime (82500053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21628 + ... + 25154.

It is an arithmetic number, because the mean of its divisors is an integer number (5228496).

Almost surely, 2^82500057 is an apocalyptic number.

It is an amenable number.

82500057 is a deficient number, since it is larger than the sum of its proper divisors (42983847).

82500057 is a wasteful number, since it uses less digits than its factorization.

82500057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669 (or 3666 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 82500057 is about 9082.9542000387. The cubic root of 82500057 is about 435.3294848163.

The spelling of 82500057 in words is "eighty-two million, five hundred thousand, fifty-seven".