2035721 has 4 divisors (see below), whose sum is σ = 2044692. Its totient is φ = 2026752.

The previous prime is 2035687. The next prime is 2035723. The reversal of 2035721 is 1275302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 583696 + 1452025 = 764^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2035721 - 2¹⁴ = 2019337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2035693 and 2035702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2035723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4136 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (511173).

2^2035721 is an apocalyptic number.

It is an amenable number.

2035721 is a deficient number, since it is larger than the sum of its proper divisors (8971).

2035721 is an equidigital number, since it uses as much as digits as its factorization.

2035721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2035721 is about 1426.7869497581. The cubic root of 2035721 is about 126.7377770919.

The spelling of 2035721 in words is "two million, thirty-five thousand, seven hundred twenty-one".