80557 has 2 divisors, whose sum is σ = 80558. Its totient is φ = 80556.

The previous prime is 80537. The next prime is 80567. The reversal of 80557 is 75508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70756 + 9801 = 266^2 + 99^2 .

It is a cyclic number.

It is not a de Polignac number, because 80557 - 2⁷ = 80429 is a prime.

80557 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40278 + 40279.

It is an arithmetic number, because the mean of its divisors is an integer number (40279).

2⁸⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

80557 is a deficient number, since it is larger than the sum of its proper divisors (1).

80557 is an equidigital number, since it uses as much as digits as its factorization.

80557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 80557 is about 283.8256507083. The cubic root of 80557 is about 43.1884642839.

The spelling of 80557 in words is "eighty thousand, five hundred fifty-seven".