2595821 has 2 divisors, whose sum is σ = 2595822. Its totient is φ = 2595820.

The previous prime is 2595793. The next prime is 2595851. The reversal of 2595821 is 1285952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2592100 + 3721 = 1610^2 + 61^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2595821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2595851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1297910 + 1297911.

It is an arithmetic number, because the mean of its divisors is an integer number (1297911).

2^2595821 is an apocalyptic number.

It is an amenable number.

2595821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2595821 is an equidigital number, since it uses as much as digits as its factorization.

2595821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 2595821 is about 1611.1551756426. The cubic root of 2595821 is about 137.4331752420.

The spelling of 2595821 in words is "two million, five hundred ninety-five thousand, eight hundred twenty-one".