8120523 has 4 divisors (see below), whose sum is σ = 10827368. Its totient is φ = 5413680.

The previous prime is 8120491. The next prime is 8120527. The reversal of 8120523 is 3250218.

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

It is not a de Polignac number, because 8120523 - 2⁵ = 8120491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8120523.

It is not an unprimeable number, because it can be changed into a prime (8120527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353418 + ... + 1353423.

It is an arithmetic number, because the mean of its divisors is an integer number (2706842).

Almost surely, 2^8120523 is an apocalyptic number.

8120523 is a deficient number, since it is larger than the sum of its proper divisors (2706845).

8120523 is a wasteful number, since it uses less digits than its factorization.

8120523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706844.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8120523 is about 2849.6531367870. The cubic root of 8120523 is about 200.9993564495. Note that the first 3 decimals are identical.

The spelling of 8120523 in words is "eight million, one hundred twenty thousand, five hundred twenty-three".