2851481 has 2 divisors, whose sum is σ = 2851482. Its totient is φ = 2851480.

The previous prime is 2851469. The next prime is 2851523. The reversal of 2851481 is 1841582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2835856 + 15625 = 1684^2 + 125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2851481 is a prime.

It is a super-2 number, since 2×2851481² = 16261887786722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2851421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425740 + 1425741.

It is an arithmetic number, because the mean of its divisors is an integer number (1425741).

2^2851481 is an apocalyptic number.

It is an amenable number.

2851481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851481 is an equidigital number, since it uses as much as digits as its factorization.

2851481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 29.

The square root of 2851481 is about 1688.6328789882. The cubic root of 2851481 is about 141.8045482655.

The spelling of 2851481 in words is "two million, eight hundred fifty-one thousand, four hundred eighty-one".