4901681 has 2 divisors, whose sum is σ = 4901682. Its totient is φ = 4901680.

The previous prime is 4901657. The next prime is 4901683. The reversal of 4901681 is 1861094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4389025 + 512656 = 2095^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 4901681 - 2¹⁰ = 4900657 is a prime.

It is a super-2 number, since 2×4901681² = 48052953251522, which contains 22 as substring.

Together with 4901683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4901683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2450840 + 2450841.

It is an arithmetic number, because the mean of its divisors is an integer number (2450841).

Almost surely, 2^4901681 is an apocalyptic number.

It is an amenable number.

4901681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4901681 is an equidigital number, since it uses as much as digits as its factorization.

4901681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 4901681 is about 2213.9740287546. The cubic root of 4901681 is about 169.8693459780.

The spelling of 4901681 in words is "four million, nine hundred one thousand, six hundred eighty-one".