80261217 has 6 divisors (see below), whose sum is σ = 115932882. Its totient is φ = 53507472.

The previous prime is 80261213. The next prime is 80261287. The reversal of 80261217 is 71216208.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 27029601 = 7296^2 + 5199^2 .

It is not a de Polignac number, because 80261217 - 2² = 80261213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80261213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4458948 + ... + 4458965.

It is an arithmetic number, because the mean of its divisors is an integer number (19322147).

Almost surely, 2^80261217 is an apocalyptic number.

It is an amenable number.

80261217 is a deficient number, since it is larger than the sum of its proper divisors (35671665).

80261217 is a wasteful number, since it uses less digits than its factorization.

80261217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8917919 (or 8917916 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 80261217 is about 8958.8624835969. The cubic root of 80261217 is about 431.3554076301.

The spelling of 80261217 in words is "eighty million, two hundred sixty-one thousand, two hundred seventeen".