2681533 has 2 divisors, whose sum is σ = 2681534. Its totient is φ = 2681532.

The previous prime is 2681521. The next prime is 2681557. The reversal of 2681533 is 3351862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2679769 + 1764 = 1637^2 + 42^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2681533 is a prime.

It is equal to p₁₉₅₃₈₂ and since 2681533 and 195382 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2681573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340766 + 1340767.

It is an arithmetic number, because the mean of its divisors is an integer number (1340767).

2^2681533 is an apocalyptic number.

It is an amenable number.

2681533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681533 is an equidigital number, since it uses as much as digits as its factorization.

2681533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 2681533 is about 1637.5387018327. The cubic root of 2681533 is about 138.9294709737.

The spelling of 2681533 in words is "two million, six hundred eighty-one thousand, five hundred thirty-three".