2556013 has 8 divisors (see below), whose sum is σ = 2808000. Its totient is φ = 2315808.

The previous prime is 2556011. The next prime is 2556019. The reversal of 2556013 is 3106552.

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 2556013 - 2¹ = 2556011 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556011) 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, 2488 + ... + 3361.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

2^2556013 is an apocalyptic number.

2556013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2556013 is a deficient number, since it is larger than the sum of its proper divisors (251987).

2556013 is a wasteful number, since it uses less digits than its factorization.

2556013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2556013 is about 1598.7535770093. The cubic root of 2556013 is about 136.7270213956.

The spelling of 2556013 in words is "two million, five hundred fifty-six thousand, thirteen".