8280557 has 2 divisors, whose sum is σ = 8280558. Its totient is φ = 8280556.

The previous prime is 8280521. The next prime is 8280577. The reversal of 8280557 is 7550828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8031556 + 249001 = 2834^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280557 - 2¹⁰ = 8279533 is a prime.

It is a super-3 number, since 3×8280557³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8280577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140278 + 4140279.

It is an arithmetic number, because the mean of its divisors is an integer number (4140279).

Almost surely, 2^8280557 is an apocalyptic number.

It is an amenable number.

8280557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280557 is an equidigital number, since it uses as much as digits as its factorization.

8280557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 8280557 is about 2877.5956978005. The cubic root of 8280557 is about 202.3111647130.

The spelling of 8280557 in words is "eight million, two hundred eighty thousand, five hundred fifty-seven".