80557567 has 2 divisors, whose sum is σ = 80557568. Its totient is φ = 80557566.

The previous prime is 80557553. The next prime is 80557571. The reversal of 80557567 is 76575508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80557567 - 2¹⁵ = 80524799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80554567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40278783 + 40278784.

It is an arithmetic number, because the mean of its divisors is an integer number (40278784).

Almost surely, 2^80557567 is an apocalyptic number.

80557567 is a deficient number, since it is larger than the sum of its proper divisors (1).

80557567 is an equidigital number, since it uses as much as digits as its factorization.

80557567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294000, while the sum is 43.

The square root of 80557567 is about 8975.3867326149. The cubic root of 80557567 is about 431.8856561087.

The spelling of 80557567 in words is "eighty million, five hundred fifty-seven thousand, five hundred sixty-seven".