80051111 has 8 divisors (see below), whose sum is σ = 91881504. Its totient is φ = 68319360.

The previous prime is 80051071. The next prime is 80051117. The reversal of 80051111 is 11115008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80051111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80051111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80051117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22910 + ... + 26171.

It is an arithmetic number, because the mean of its divisors is an integer number (11485188).

Almost surely, 2^80051111 is an apocalyptic number.

80051111 is a deficient number, since it is larger than the sum of its proper divisors (11830393).

80051111 is a wasteful number, since it uses less digits than its factorization.

80051111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49321.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 80051111 is about 8947.1286455488. The cubic root of 80051111 is about 430.9786812308.

Adding to 80051111 its reverse (11115008), we get a palindrome (91166119).

The spelling of 80051111 in words is "eighty million, fifty-one thousand, one hundred eleven".