4997281 has 2 divisors, whose sum is σ = 4997282. Its totient is φ = 4997280.

The previous prime is 4997273. The next prime is 4997287. The reversal of 4997281 is 1827994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4950625 + 46656 = 2225^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 4997281 - 2³ = 4997273 is a prime.

It is a super-2 number, since 2×4997281² = 49945634785922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4997287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498640 + 2498641.

It is an arithmetic number, because the mean of its divisors is an integer number (2498641).

Almost surely, 2^4997281 is an apocalyptic number.

It is an amenable number.

4997281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4997281 is an equidigital number, since it uses as much as digits as its factorization.

4997281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 4997281 is about 2235.4599079384. The cubic root of 4997281 is about 170.9665928834.

The spelling of 4997281 in words is "four million, nine hundred ninety-seven thousand, two hundred eighty-one".