8120553 has 8 divisors (see below), whose sum is σ = 12374208. Its totient is φ = 4640304.

The previous prime is 8120531. The next prime is 8120561. The reversal of 8120553 is 3550218.

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

It is not a de Polignac number, because 8120553 - 2¹² = 8116457 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8120573) 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, 193326 + ... + 193367.

It is an arithmetic number, because the mean of its divisors is an integer number (1546776).

Almost surely, 2^8120553 is an apocalyptic number.

It is an amenable number.

8120553 is a deficient number, since it is larger than the sum of its proper divisors (4253655).

8120553 is a wasteful number, since it uses less digits than its factorization.

8120553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386703.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 8120553 is about 2849.6584005807. The cubic root of 8120553 is about 200.9996039694. Note that the first 3 decimals are identical.

The spelling of 8120553 in words is "eight million, one hundred twenty thousand, five hundred fifty-three".