80245145 has 4 divisors (see below), whose sum is σ = 96294180. Its totient is φ = 64196112.

The previous prime is 80245141. The next prime is 80245157. The reversal of 80245145 is 54154208.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59923081 + 20322064 = 7741^2 + 4508^2 .

It is a cyclic number.

It is not a de Polignac number, because 80245145 - 2² = 80245141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80245141) 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, 8024510 + ... + 8024519.

It is an arithmetic number, because the mean of its divisors is an integer number (24073545).

Almost surely, 2^80245145 is an apocalyptic number.

It is an amenable number.

80245145 is a deficient number, since it is larger than the sum of its proper divisors (16049035).

80245145 is a wasteful number, since it uses less digits than its factorization.

80245145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16049034.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 80245145 is about 8957.9654498106. The cubic root of 80245145 is about 431.3266132876.

The spelling of 80245145 in words is "eighty million, two hundred forty-five thousand, one hundred forty-five".