2957021 has 4 divisors (see below), whose sum is σ = 3007200. Its totient is φ = 2906844.

The previous prime is 2956999. The next prime is 2957023. The reversal of 2957021 is 1207592.

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 a cyclic number.

It is not a de Polignac number, because 2957021 - 2¹⁸ = 2694877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2957023) 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, 25001 + ... + 25118.

It is an arithmetic number, because the mean of its divisors is an integer number (751800).

2^2957021 is an apocalyptic number.

It is an amenable number.

2957021 is a deficient number, since it is larger than the sum of its proper divisors (50179).

2957021 is an equidigital number, since it uses as much as digits as its factorization.

2957021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50178.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2957021 is about 1719.5990811814. The cubic root of 2957021 is about 143.5329032993.

The spelling of 2957021 in words is "two million, nine hundred fifty-seven thousand, twenty-one".