80554440 has 32 divisors (see below), whose sum is σ = 241663680. Its totient is φ = 21481152.

The previous prime is 80554429. The next prime is 80554451. The reversal of 80554440 is 4445508.

It is an interprime number because it is at equal distance from previous prime (80554429) and next prime (80554451).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80554398 and 80554407.

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, 335524 + ... + 335763.

It is an arithmetic number, because the mean of its divisors is an integer number (7551990).

Almost surely, 2^80554440 is an apocalyptic number.

It is an amenable number.

80554440 is an abundant number, since it is smaller than the sum of its proper divisors (161109240).

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

80554440 is a wasteful number, since it uses less digits than its factorization.

80554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671301 (or 671297 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 80554440 is about 8975.2125323025. The cubic root of 80554440 is about 431.8800678734.

Adding to 80554440 its reverse (4445508), we get a palindrome (84999948).

The spelling of 80554440 in words is "eighty million, five hundred fifty-four thousand, four hundred forty".