80495551 has 2 divisors, whose sum is σ = 80495552. Its totient is φ = 80495550.

The previous prime is 80495543. The next prime is 80495557. The reversal of 80495551 is 15559408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80495551 - 2³ = 80495543 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80495551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80495557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40247775 + 40247776.

It is an arithmetic number, because the mean of its divisors is an integer number (40247776).

Almost surely, 2^80495551 is an apocalyptic number.

80495551 is a deficient number, since it is larger than the sum of its proper divisors (1).

80495551 is an equidigital number, since it uses as much as digits as its factorization.

80495551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 80495551 is about 8971.9312859607. The cubic root of 80495551 is about 431.7748008209.

The spelling of 80495551 in words is "eighty million, four hundred ninety-five thousand, five hundred fifty-one".