2032721 has 2 divisors, whose sum is σ = 2032722. Its totient is φ = 2032720.

The previous prime is 2032711. The next prime is 2032733. The reversal of 2032721 is 1272302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1860496 + 172225 = 1364^2 + 415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2032721 is a prime.

It is a super-3 number, since 3×2032721³ = 25197333048712624083, which contains 333 as substring.

It is equal to p₁₅₁₂₀₈ and since 2032721 and 151208 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2032721.

It is not a weakly prime, because it can be changed into another prime (2032711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016360 + 1016361.

It is an arithmetic number, because the mean of its divisors is an integer number (1016361).

2^2032721 is an apocalyptic number.

It is an amenable number.

2032721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2032721 is an equidigital number, since it uses as much as digits as its factorization.

2032721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 2032721 is about 1425.7352489154. The cubic root of 2032721 is about 126.6754895363.

The spelling of 2032721 in words is "two million, thirty-two thousand, seven hundred twenty-one".