2997021 has 4 divisors (see below), whose sum is σ = 3996032. Its totient is φ = 1998012.

The previous prime is 2997019. The next prime is 2997031. The reversal of 2997021 is 1207992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2997021 - 2¹ = 2997019 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2997021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2997011) 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, 499501 + ... + 499506.

It is an arithmetic number, because the mean of its divisors is an integer number (999008).

2^2997021 is an apocalyptic number.

It is an amenable number.

2997021 is a deficient number, since it is larger than the sum of its proper divisors (999011).

2997021 is an equidigital number, since it uses as much as digits as its factorization.

2997021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999010.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2997021 is about 1731.1906307510. The cubic root of 2997021 is about 144.1772027598.

The spelling of 2997021 in words is "two million, nine hundred ninety-seven thousand, twenty-one".