80809550 has 24 divisors (see below), whose sum is σ = 151162200. Its totient is φ = 32139680.

The previous prime is 80809549. The next prime is 80809559. The reversal of 80809550 is 5590808.

It is a self number, because there is not a number n which added to its sum of digits gives 80809550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80809559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4436 + ... + 13464.

It is an arithmetic number, because the mean of its divisors is an integer number (6298425).

Almost surely, 2^80809550 is an apocalyptic number.

80809550 is a deficient number, since it is larger than the sum of its proper divisors (70352650).

80809550 is a wasteful number, since it uses less digits than its factorization.

80809550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220 (or 9215 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 80809550 is about 8989.4132177801. The cubic root of 80809550 is about 432.3354982669.

The spelling of 80809550 in words is "eighty million, eight hundred nine thousand, five hundred fifty".