80917145 has 8 divisors (see below), whose sum is σ = 98008704. Its totient is φ = 64128304.

The previous prime is 80917141. The next prime is 80917157. The reversal of 80917145 is 54171908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80917145 - 2² = 80917141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80917141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75089 + ... + 76158.

It is an arithmetic number, because the mean of its divisors is an integer number (12251088).

Almost surely, 2^80917145 is an apocalyptic number.

It is an amenable number.

80917145 is a deficient number, since it is larger than the sum of its proper divisors (17091559).

80917145 is a wasteful number, since it uses less digits than its factorization.

80917145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151359.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 80917145 is about 8995.3957667242. The cubic root of 80917145 is about 432.5272928749.

The spelling of 80917145 in words is "eighty million, nine hundred seventeen thousand, one hundred forty-five".