2556365 has 8 divisors (see below), whose sum is σ = 3505920. Its totient is φ = 1752912.

The previous prime is 2556331. The next prime is 2556373. The reversal of 2556365 is 5636552.

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

It is not a de Polignac number, because 2556365 - 2¹⁴ = 2539981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36485 + ... + 36554.

It is an arithmetic number, because the mean of its divisors is an integer number (438240).

2^2556365 is an apocalyptic number.

It is an amenable number.

2556365 is a deficient number, since it is larger than the sum of its proper divisors (949555).

2556365 is an equidigital number, since it uses as much as digits as its factorization.

2556365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73051.

The product of its digits is 27000, while the sum is 32.

The square root of 2556365 is about 1598.8636589778. The cubic root of 2556365 is about 136.7332975377.

The spelling of 2556365 in words is "two million, five hundred fifty-six thousand, three hundred sixty-five".