4887581 has 2 divisors, whose sum is σ = 4887582. Its totient is φ = 4887580.

The previous prime is 4887563. The next prime is 4887587. The reversal of 4887581 is 1857884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4884100 + 3481 = 2210^2 + 59^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4887581 is a prime.

It is a super-2 number, since 2×4887581² = 47776896063122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4887587) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2443790 + 2443791.

It is an arithmetic number, because the mean of its divisors is an integer number (2443791).

Almost surely, 2^4887581 is an apocalyptic number.

It is an amenable number.

4887581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4887581 is an equidigital number, since it uses as much as digits as its factorization.

4887581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71680, while the sum is 41.

The square root of 4887581 is about 2210.7874162841. The cubic root of 4887581 is about 169.7063095241.

The spelling of 4887581 in words is "four million, eight hundred eighty-seven thousand, five hundred eighty-one".