83121095 has 4 divisors (see below), whose sum is σ = 99745320. Its totient is φ = 66496872.

The previous prime is 83121083. The next prime is 83121113. The reversal of 83121095 is 59012138.

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

It is a cyclic number.

It is not a de Polignac number, because 83121095 - 2¹⁶ = 83055559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8312105 + ... + 8312114.

It is an arithmetic number, because the mean of its divisors is an integer number (24936330).

Almost surely, 2^83121095 is an apocalyptic number.

83121095 is a deficient number, since it is larger than the sum of its proper divisors (16624225).

83121095 is a wasteful number, since it uses less digits than its factorization.

83121095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16624224.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 83121095 is about 9117.0771083720. The cubic root of 83121095 is about 436.4191025940.

The spelling of 83121095 in words is "eighty-three million, one hundred twenty-one thousand, ninety-five".