2259406321 has 4 divisors (see below), whose sum is σ = 2259670500. Its totient is φ = 2259142144.

The previous prime is 2259406297. The next prime is 2259406333. The reversal of 2259406321 is 1236049522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 855855025 + 1403551296 = 29255^2 + 37464^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259406321 - 2²⁵ = 2225851889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2259406351) 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, 118816 + ... + 136513.

It is an arithmetic number, because the mean of its divisors is an integer number (564917625).

Almost surely, 2^2259406321 is an apocalyptic number.

It is an amenable number.

2259406321 is a deficient number, since it is larger than the sum of its proper divisors (264179).

2259406321 is an equidigital number, since it uses as much as digits as its factorization.

2259406321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264178.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2259406321 is about 47533.2128200903. The cubic root of 2259406321 is about 1312.1941979745.

The spelling of 2259406321 in words is "two billion, two hundred fifty-nine million, four hundred six thousand, three hundred twenty-one".