80054991 has 12 divisors (see below), whose sum is σ = 116480832. Its totient is φ = 52979616.

The previous prime is 80054981. The next prime is 80055007. The reversal of 80054991 is 19945008.

It is a de Polignac number, because none of the positive numbers 2^k-80054991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80054951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31231 + ... + 33696.

It is an arithmetic number, because the mean of its divisors is an integer number (9706736).

Almost surely, 2^80054991 is an apocalyptic number.

80054991 is a deficient number, since it is larger than the sum of its proper divisors (36425841).

80054991 is a wasteful number, since it uses less digits than its factorization.

80054991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65070 (or 65067 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 80054991 is about 8947.3454722616. The cubic root of 80054991 is about 430.9856441584.

Adding to 80054991 its reverse (19945008), we get a palindrome (99999999).

It can be divided in two parts, 8005 and 4991, that added together give a square (12996 = 114²).

The spelling of 80054991 in words is "eighty million, fifty-four thousand, nine hundred ninety-one".