80523500 has 24 divisors (see below), whose sum is σ = 175864416. Its totient is φ = 32209200.

The previous prime is 80523493. The next prime is 80523503. The reversal of 80523500 is 532508.

It is not an unprimeable number, because it can be changed into a prime (80523503) 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 7 ways as a sum of consecutive naturals, for example, 80024 + ... + 81023.

It is an arithmetic number, because the mean of its divisors is an integer number (7327684).

Almost surely, 2^80523500 is an apocalyptic number.

It is an amenable number.

80523500 is an abundant number, since it is smaller than the sum of its proper divisors (95340916).

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

80523500 is a wasteful number, since it uses less digits than its factorization.

80523500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161066 (or 161054 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 80523500 is about 8973.4887307000. The cubic root of 80523500 is about 431.8247674644.

The spelling of 80523500 in words is "eighty million, five hundred twenty-three thousand, five hundred".