80516520 has 192 divisors, whose sum is σ = 303264000. Its totient is φ = 18146304.

The previous prime is 80516507. The next prime is 80516521. The reversal of 80516520 is 2561508.

80516520 is a `hidden beast` number, since 8 + 0 + 5 + 1 + 652 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (80516521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224101 + ... + 224459.

It is an arithmetic number, because the mean of its divisors is an integer number (1579500).

Almost surely, 2^80516520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80516520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151632000).

80516520 is an abundant number, since it is smaller than the sum of its proper divisors (222747480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80516520 is a wasteful number, since it uses less digits than its factorization.

80516520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 80516520 is about 8973.0997988432. The cubic root of 80516520 is about 431.8122898483.

The spelling of 80516520 in words is "eighty million, five hundred sixteen thousand, five hundred twenty".