82257577 has 4 divisors (see below), whose sum is σ = 87096276. Its totient is φ = 77418880.

The previous prime is 82257563. The next prime is 82257583. The reversal of 82257577 is 77575228.

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 64818601 + 17438976 = 8051^2 + 4176^2 .

It is a cyclic number.

It is not a de Polignac number, because 82257577 - 2¹¹ = 82255529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82257377) 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, 2419324 + ... + 2419357.

It is an arithmetic number, because the mean of its divisors is an integer number (21774069).

Almost surely, 2^82257577 is an apocalyptic number.

It is an amenable number.

82257577 is a deficient number, since it is larger than the sum of its proper divisors (4838699).

82257577 is a wasteful number, since it uses less digits than its factorization.

82257577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838698.

The product of its digits is 274400, while the sum is 43.

The square root of 82257577 is about 9069.5962975206. The cubic root of 82257577 is about 434.9025668072.

The spelling of 82257577 in words is "eighty-two million, two hundred fifty-seven thousand, five hundred seventy-seven".