80545550 has 24 divisors (see below), whose sum is σ = 151199400. Its totient is φ = 31920480.

The previous prime is 80545529. The next prime is 80545571. The reversal of 80545550 is 5554508.

It is an interprime number because it is at equal distance from previous prime (80545529) and next prime (80545571).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1940 + ... + 12839.

It is an arithmetic number, because the mean of its divisors is an integer number (6299975).

Almost surely, 2^80545550 is an apocalyptic number.

80545550 is a deficient number, since it is larger than the sum of its proper divisors (70653850).

80545550 is a wasteful number, since it uses less digits than its factorization.

80545550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900 (or 14895 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 80545550 is about 8974.7172657416. The cubic root of 80545550 is about 431.8641798394.

The spelling of 80545550 in words is "eighty million, five hundred forty-five thousand, five hundred fifty".