2937221 has 4 divisors (see below), whose sum is σ = 3356832. Its totient is φ = 2517612.

The previous prime is 2937217. The next prime is 2937239. The reversal of 2937221 is 1227392.

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 2937221 - 2² = 2937217 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 (2937241) 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, 209795 + ... + 209808.

It is an arithmetic number, because the mean of its divisors is an integer number (839208).

2^2937221 is an apocalyptic number.

It is an amenable number.

2937221 is a deficient number, since it is larger than the sum of its proper divisors (419611).

2937221 is an equidigital number, since it uses as much as digits as its factorization.

2937221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419610.

The product of its digits is 1512, while the sum is 26.

The square root of 2937221 is about 1713.8322555023. The cubic root of 2937221 is about 143.2118235871.

The spelling of 2937221 in words is "two million, nine hundred thirty-seven thousand, two hundred twenty-one".