8120551 has 8 divisors (see below), whose sum is σ = 8482320. Its totient is φ = 7764288.

The previous prime is 8120531. The next prime is 8120561. The reversal of 8120551 is 1550218.

8120551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8120551 - 2⁹ = 8120039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120531) 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, 1795 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^8120551 is an apocalyptic number.

8120551 is a deficient number, since it is larger than the sum of its proper divisors (361769).

8120551 is a wasteful number, since it uses less digits than its factorization.

8120551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 8120551 is about 2849.6580496614. The cubic root of 8120551 is about 200.9995874681. Note that the first 3 decimals are identical.

Adding to 8120551 its reverse (1550218), we get a palindrome (9670769).

The spelling of 8120551 in words is "eight million, one hundred twenty thousand, five hundred fifty-one".