80553564 has 144 divisors (see below), whose sum is σ = 255044608. Its totient is φ = 20870784.

The previous prime is 80553563. The next prime is 80553569. The reversal of 80553564 is 46535508.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80553563) 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 47 ways as a sum of consecutive naturals, for example, 219309 + ... + 219675.

Almost surely, 2^80553564 is an apocalyptic number.

80553564 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80553564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127522304).

80553564 is an abundant number, since it is smaller than the sum of its proper divisors (174491044).

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

80553564 is a wasteful number, since it uses less digits than its factorization.

80553564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 80553564 is about 8975.1637310971. The cubic root of 80553564 is about 431.8785023553.

The spelling of 80553564 in words is "eighty million, five hundred fifty-three thousand, five hundred sixty-four".