80515456 has 64 divisors (see below), whose sum is σ = 191335680. Its totient is φ = 32997888.

The previous prime is 80515439. The next prime is 80515499. The reversal of 80515456 is 65451508.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18655 + ... + 22561.

It is an arithmetic number, because the mean of its divisors is an integer number (2989620).

Almost surely, 2^80515456 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 80515456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95667840).

80515456 is an abundant number, since it is smaller than the sum of its proper divisors (110820224).

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

80515456 is a wasteful number, since it uses less digits than its factorization.

80515456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951 (or 3939 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 80515456 is about 8973.0405103287. The cubic root of 80515456 is about 431.8103877529.

It can be divided in two parts, 805 and 15456, that added together give a palindrome (16261).

The spelling of 80515456 in words is "eighty million, five hundred fifteen thousand, four hundred fifty-six".