83331505 has 8 divisors (see below), whose sum is σ = 100576872. Its totient is φ = 66279168.

The previous prime is 83331499. The next prime is 83331509. The reversal of 83331505 is 50513338.

It can be written as a sum of positive squares in 4 ways, for example, as 19219456 + 64112049 = 4384^2 + 8007^2 .

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 83331505 - 2¹⁷ = 83200433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83331509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47304 + ... + 49033.

It is an arithmetic number, because the mean of its divisors is an integer number (12572109).

Almost surely, 2^83331505 is an apocalyptic number.

It is an amenable number.

83331505 is a deficient number, since it is larger than the sum of its proper divisors (17245367).

83331505 is a wasteful number, since it uses less digits than its factorization.

83331505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96515.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 83331505 is about 9128.6091492626. The cubic root of 83331505 is about 436.7870379522.

The spelling of 83331505 in words is "eighty-three million, three hundred thirty-one thousand, five hundred five".