2556329 has 4 divisors (see below), whose sum is σ = 2572176. Its totient is φ = 2540484.

The previous prime is 2556277. The next prime is 2556331. The reversal of 2556329 is 9236552.

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 2556329 - 2¹² = 2552233 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2556295 and 2556304.

It is not an unprimeable number, because it can be changed into a prime (2550329) 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, 7679 + ... + 8004.

It is an arithmetic number, because the mean of its divisors is an integer number (643044).

2^2556329 is an apocalyptic number.

It is an amenable number.

2556329 is a deficient number, since it is larger than the sum of its proper divisors (15847).

2556329 is a wasteful number, since it uses less digits than its factorization.

2556329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846.

The product of its digits is 16200, while the sum is 32.

The square root of 2556329 is about 1598.8524009426. The cubic root of 2556329 is about 136.7326556860.

The spelling of 2556329 in words is "two million, five hundred fifty-six thousand, three hundred twenty-nine".