2263921 has 8 divisors (see below), whose sum is σ = 2481984. Its totient is φ = 2047920.

The previous prime is 2263909. The next prime is 2263927. The reversal of 2263921 is 1293622.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2263921 - 2¹⁷ = 2132849 is a prime.

It is a Duffinian number.

2263921 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2263927) 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, 2676 + ... + 3418.

It is an arithmetic number, because the mean of its divisors is an integer number (310248).

2^2263921 is an apocalyptic number.

It is an amenable number.

2263921 is a deficient number, since it is larger than the sum of its proper divisors (218063).

2263921 is a wasteful number, since it uses less digits than its factorization.

2263921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

The product of its digits is 1296, while the sum is 25.

The square root of 2263921 is about 1504.6331778876. The cubic root of 2263921 is about 131.3067612390.

Subtracting from 2263921 its reverse (1293622), we obtain a cube (970299 = 99³).

The spelling of 2263921 in words is "two million, two hundred sixty-three thousand, nine hundred twenty-one".