8120545 has 8 divisors (see below), whose sum is σ = 9789696. Its totient is φ = 6466416.

The previous prime is 8120531. The next prime is 8120561. The reversal of 8120545 is 5450218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8120545 is a prime.

It is a Duffinian number.

8120545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (1223712).

Almost surely, 2^8120545 is an apocalyptic number.

It is an amenable number.

8120545 is a deficient number, since it is larger than the sum of its proper divisors (1669151).

8120545 is a wasteful number, since it uses less digits than its factorization.

8120545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 8120545 is about 2849.6569969033. The cubic root of 8120545 is about 200.9995379642. Note that the first 3 decimals are identical.

The spelling of 8120545 in words is "eight million, one hundred twenty thousand, five hundred forty-five".