2257321 has 4 divisors (see below), whose sum is σ = 2462544. Its totient is φ = 2052100.

The previous prime is 2257319. The next prime is 2257361. The reversal of 2257321 is 1237522.

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 2257321 - 2¹ = 2257319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2257292 and 2257301.

It is not an unprimeable number, because it can be changed into a prime (2257301) 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, 102595 + ... + 102616.

It is an arithmetic number, because the mean of its divisors is an integer number (615636).

2^2257321 is an apocalyptic number.

It is an amenable number.

2257321 is a deficient number, since it is larger than the sum of its proper divisors (205223).

2257321 is a wasteful number, since it uses less digits than its factorization.

2257321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205222.

The product of its digits is 840, while the sum is 22.

The square root of 2257321 is about 1502.4383514807. The cubic root of 2257321 is about 131.1790376794.

The spelling of 2257321 in words is "two million, two hundred fifty-seven thousand, three hundred twenty-one".