2237921 has 8 divisors (see below), whose sum is σ = 2640384. Its totient is φ = 1856160.

The previous prime is 2237909. The next prime is 2237927. The reversal of 2237921 is 1297322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2237921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2237927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4940 + ... + 5373.

It is an arithmetic number, because the mean of its divisors is an integer number (330048).

2^2237921 is an apocalyptic number.

It is an amenable number.

2237921 is a deficient number, since it is larger than the sum of its proper divisors (402463).

2237921 is a wasteful number, since it uses less digits than its factorization.

2237921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351.

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

The square root of 2237921 is about 1495.9682483261. The cubic root of 2237921 is about 130.8021604322.

The spelling of 2237921 in words is "two million, two hundred thirty-seven thousand, nine hundred twenty-one".