8320553 has 4 divisors (see below), whose sum is σ = 8375808. Its totient is φ = 8265300.

The previous prime is 8320547. The next prime is 8320567. The reversal of 8320553 is 3550238.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8320553 - 2¹⁰ = 8319529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8320453) 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, 27401 + ... + 27702.

It is an arithmetic number, because the mean of its divisors is an integer number (2093952).

Almost surely, 2^8320553 is an apocalyptic number.

It is an amenable number.

8320553 is a deficient number, since it is larger than the sum of its proper divisors (55255).

8320553 is a wasteful number, since it uses less digits than its factorization.

8320553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55254.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 8320553 is about 2884.5368779061. The cubic root of 8320553 is about 202.6363700648.

The spelling of 8320553 in words is "eight million, three hundred twenty thousand, five hundred fifty-three".