8581049 has 2 divisors, whose sum is σ = 8581050. Its totient is φ = 8581048.

The previous prime is 8581043. The next prime is 8581051. The reversal of 8581049 is 9401858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8369449 + 211600 = 2893^2 + 460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8581049 is a prime.

It is a Sophie Germain prime.

Together with 8581051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8581043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4290524 + 4290525.

It is an arithmetic number, because the mean of its divisors is an integer number (4290525).

Almost surely, 2^8581049 is an apocalyptic number.

It is an amenable number.

8581049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8581049 is an equidigital number, since it uses as much as digits as its factorization.

8581049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 8581049 is about 2929.3427590502. The cubic root of 8581049 is about 204.7293592964.

The spelling of 8581049 in words is "eight million, five hundred eighty-one thousand, forty-nine".