8285551 has 2 divisors, whose sum is σ = 8285552. Its totient is φ = 8285550.

The previous prime is 8285549. The next prime is 8285581. The reversal of 8285551 is 1555828.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8285551 - 2¹ = 8285549 is a prime.

Together with 8285549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8285531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4142775 + 4142776.

It is an arithmetic number, because the mean of its divisors is an integer number (4142776).

Almost surely, 2^8285551 is an apocalyptic number.

8285551 is the 1821-st centered pentagonal number.

8285551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8285551 is an equidigital number, since it uses as much as digits as its factorization.

8285551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16000, while the sum is 34.

The square root of 8285551 is about 2878.4633053072. The cubic root of 8285551 is about 202.3518277953.

It can be divided in two parts, 8285 and 551, that added together give a square (8836 = 94²).

The spelling of 8285551 in words is "eight million, two hundred eighty-five thousand, five hundred fifty-one".