80521458 has 32 divisors (see below), whose sum is σ = 170674560. Its totient is φ = 25280640.

The previous prime is 80521453. The next prime is 80521501. The reversal of 80521458 is 85412508.

It is not an unprimeable number, because it can be changed into a prime (80521451) 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, 1491 + ... + 12777.

It is an arithmetic number, because the mean of its divisors is an integer number (5333580).

Almost surely, 2^80521458 is an apocalyptic number.

80521458 is an abundant number, since it is smaller than the sum of its proper divisors (90153102).

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

80521458 is a wasteful number, since it uses less digits than its factorization.

80521458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11362.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 80521458 is about 8973.3749503740. The cubic root of 80521458 is about 431.8211172106.

The spelling of 80521458 in words is "eighty million, five hundred twenty-one thousand, four hundred fifty-eight".