80557536 has 48 divisors (see below), whose sum is σ = 213542784. Its totient is φ = 26588544.

The previous prime is 80557531. The next prime is 80557553. The reversal of 80557536 is 63575508.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 80557494 and 80557503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80557531) 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, 5815 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (4448808).

Almost surely, 2^80557536 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 80557536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106771392).

80557536 is an abundant number, since it is smaller than the sum of its proper divisors (132985248).

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

80557536 is a wasteful number, since it uses less digits than its factorization.

80557536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8263 (or 8255 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 80557536 is about 8975.3850056697. The cubic root of 80557536 is about 431.8856007096.

The spelling of 80557536 in words is "eighty million, five hundred fifty-seven thousand, five hundred thirty-six".