83291273 has 16 divisors (see below), whose sum is σ = 91420560. Its totient is φ = 75423744.

The previous prime is 83291239. The next prime is 83291317. The reversal of 83291273 is 37219238.

It can be written as a sum of positive squares in 8 ways, for example, as 17405584 + 65885689 = 4172^2 + 8117^2 .

It is a cyclic number.

It is not a de Polignac number, because 83291273 - 2¹² = 83287177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83296273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223115 + ... + 223487.

It is an arithmetic number, because the mean of its divisors is an integer number (5713785).

Almost surely, 2^83291273 is an apocalyptic number.

It is an amenable number.

83291273 is a deficient number, since it is larger than the sum of its proper divisors (8129287).

83291273 is a wasteful number, since it uses less digits than its factorization.

83291273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its digits is 18144, while the sum is 35.

The square root of 83291273 is about 9126.4052616570. The cubic root of 83291273 is about 436.7167338302.

The spelling of 83291273 in words is "eighty-three million, two hundred ninety-one thousand, two hundred seventy-three".