80928551 has 12 divisors (see below), whose sum is σ = 94189536. Its totient is φ = 69241920.

The previous prime is 80928541. The next prime is 80928553. The reversal of 80928551 is 15582908.

It is a de Polignac number, because none of the positive numbers 2^k-80928551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80928553) 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, 17615 + ... + 21728.

It is an arithmetic number, because the mean of its divisors is an integer number (7849128).

Almost surely, 2^80928551 is an apocalyptic number.

80928551 is a deficient number, since it is larger than the sum of its proper divisors (13260985).

80928551 is a wasteful number, since it uses less digits than its factorization.

80928551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39382 (or 39371 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 80928551 is about 8996.0297353888. The cubic root of 80928551 is about 432.5476147919.

The spelling of 80928551 in words is "eighty million, nine hundred twenty-eight thousand, five hundred fifty-one".