80016551 has 2 divisors, whose sum is σ = 80016552. Its totient is φ = 80016550.

The previous prime is 80016529. The next prime is 80016553. The reversal of 80016551 is 15561008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80016551 is a prime.

Together with 80016553, it forms a pair of twin primes.

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 80016551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80016553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40008275 + 40008276.

It is an arithmetic number, because the mean of its divisors is an integer number (40008276).

Almost surely, 2^80016551 is an apocalyptic number.

80016551 is a deficient number, since it is larger than the sum of its proper divisors (1).

80016551 is an equidigital number, since it uses as much as digits as its factorization.

80016551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 80016551 is about 8945.1970911769. The cubic root of 80016551 is about 430.9166509979.

Adding to 80016551 its reverse (15561008), we get a palindrome (95577559).

The spelling of 80016551 in words is "eighty million, sixteen thousand, five hundred fifty-one".