8257045 has 4 divisors (see below), whose sum is σ = 9908460. Its totient is φ = 6605632.

The previous prime is 8257043. The next prime is 8257057. The reversal of 8257045 is 5407528.

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 3122289 + 5134756 = 1767^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 8257045 - 2¹ = 8257043 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 8256998 and 8257016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8257043) 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, 825700 + ... + 825709.

It is an arithmetic number, because the mean of its divisors is an integer number (2477115).

Almost surely, 2^8257045 is an apocalyptic number.

It is an amenable number.

8257045 is a deficient number, since it is larger than the sum of its proper divisors (1651415).

8257045 is a wasteful number, since it uses less digits than its factorization.

8257045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651414.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 8257045 is about 2873.5074386540. The cubic root of 8257045 is about 202.1195009013.

The spelling of 8257045 in words is "eight million, two hundred fifty-seven thousand, forty-five".