3057281 has 2 divisors, whose sum is σ = 3057282. Its totient is φ = 3057280.

The previous prime is 3057253. The next prime is 3057283. The reversal of 3057281 is 1827503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2890000 + 167281 = 1700^2 + 409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3057281 is a prime.

It is a super-2 number, since 2×3057281² = 18693934225922, which contains 22 as substring.

Together with 3057283, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3057281.

It is not a weakly prime, because it can be changed into another prime (3057283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1528640 + 1528641.

It is an arithmetic number, because the mean of its divisors is an integer number (1528641).

Almost surely, 2^3057281 is an apocalyptic number.

It is an amenable number.

3057281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3057281 is an equidigital number, since it uses as much as digits as its factorization.

3057281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3057281 is about 1748.5082213132. The cubic root of 3057281 is about 145.1371037738.

The spelling of 3057281 in words is "three million, fifty-seven thousand, two hundred eighty-one".