2556316 has 12 divisors (see below), whose sum is σ = 5112688. Its totient is φ = 1095552.

The previous prime is 2556277. The next prime is 2556331. The reversal of 2556316 is 6136552.

2556316 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 91297 = 2556316 / (2 + 5 + 5 + 6 + 3 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45621 + ... + 45676.

2^2556316 is an apocalyptic number.

It is an amenable number.

2556316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556316 is a wasteful number, since it uses less digits than its factorization.

2556316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91308 (or 91306 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 2556316 is about 1598.8483355215. The cubic root of 2556316 is about 136.7324239047.

Adding to 2556316 its product of digits (5400), we get a triangular number (2561716 = T₂₂₆₃).

The spelling of 2556316 in words is "two million, five hundred fifty-six thousand, three hundred sixteen".