80551491 has 16 divisors (see below), whose sum is σ = 113936544. Its totient is φ = 50445824.

The previous prime is 80551483. The next prime is 80551501. The reversal of 80551491 is 19415508.

It is a cyclic number.

It is not a de Polignac number, because 80551491 - 2³ = 80551483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80551441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33361 + ... + 35693.

It is an arithmetic number, because the mean of its divisors is an integer number (7121034).

Almost surely, 2^80551491 is an apocalyptic number.

80551491 is a deficient number, since it is larger than the sum of its proper divisors (33385053).

80551491 is a wasteful number, since it uses less digits than its factorization.

80551491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 80551491 is about 8975.0482449957. The cubic root of 80551491 is about 431.8747976079.

Adding to 80551491 its reverse (19415508), we get a palindrome (99966999).

The spelling of 80551491 in words is "eighty million, five hundred fifty-one thousand, four hundred ninety-one".