80558557 has 2 divisors, whose sum is σ = 80558558. Its totient is φ = 80558556.

The previous prime is 80558551. The next prime is 80558561. The reversal of 80558557 is 75585508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45441081 + 35117476 = 6741^2 + 5926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80558557 is a prime.

It is a super-2 number, since 2×80558557² = 12979362211844498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80558551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40279278 + 40279279.

It is an arithmetic number, because the mean of its divisors is an integer number (40279279).

Almost surely, 2^80558557 is an apocalyptic number.

It is an amenable number.

80558557 is a deficient number, since it is larger than the sum of its proper divisors (1).

80558557 is an equidigital number, since it uses as much as digits as its factorization.

80558557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280000, while the sum is 43.

The square root of 80558557 is about 8975.4418832724. The cubic root of 80558557 is about 431.8874252992.

The spelling of 80558557 in words is "eighty million, five hundred fifty-eight thousand, five hundred fifty-seven".