80450556 has 12 divisors (see below), whose sum is σ = 187717992. Its totient is φ = 26816848.

The previous prime is 80450551. The next prime is 80450567. The reversal of 80450556 is 65505408.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80450551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3352095 + ... + 3352118.

It is an arithmetic number, because the mean of its divisors is an integer number (15643166).

Almost surely, 2^80450556 is an apocalyptic number.

It is an amenable number.

80450556 is an abundant number, since it is smaller than the sum of its proper divisors (107267436).

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

80450556 is a wasteful number, since it uses less digits than its factorization.

80450556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704220 (or 6704218 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 80450556 is about 8969.4233928386. The cubic root of 80450556 is about 431.6943353877.

It can be divided in two parts, 804 and 50556, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 80450556 in words is "eighty million, four hundred fifty thousand, five hundred fifty-six".