80909055 has 24 divisors (see below), whose sum is σ = 146341728. Its totient is φ = 41274816.

The previous prime is 80909051. The next prime is 80909063. The reversal of 80909055 is 55090908.

It is not a de Polignac number, because 80909055 - 2² = 80909051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80909051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38052 + ... + 40121.

It is an arithmetic number, because the mean of its divisors is an integer number (6097572).

Almost surely, 2^80909055 is an apocalyptic number.

80909055 is a deficient number, since it is larger than the sum of its proper divisors (65432673).

80909055 is a wasteful number, since it uses less digits than its factorization.

80909055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78207 (or 78204 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 80909055 is about 8994.9460809946. The cubic root of 80909055 is about 432.5128778729.

The spelling of 80909055 in words is "eighty million, nine hundred nine thousand, fifty-five".