2556007 has 4 divisors (see below), whose sum is σ = 2581416. Its totient is φ = 2530600.

The previous prime is 2555989. The next prime is 2556011. The reversal of 2556007 is 7006552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2556007 - 2¹¹ = 2553959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556067) 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, 12553 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (645354).

2^2556007 is an apocalyptic number.

2556007 is a deficient number, since it is larger than the sum of its proper divisors (25409).

2556007 is a wasteful number, since it uses less digits than its factorization.

2556007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25408.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 2556007 is about 1598.7517005464. The cubic root of 2556007 is about 136.7269144109.

The spelling of 2556007 in words is "two million, five hundred fifty-six thousand, seven".