2556516 has 12 divisors (see below), whose sum is σ = 5965232. Its totient is φ = 852168.

The previous prime is 2556509. The next prime is 2556523. The reversal of 2556516 is 6156552.

It is an interprime number because it is at equal distance from previous prime (2556509) and next prime (2556523).

It is a tau number, because it is divible by the number of its divisors (12).

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, 106510 + ... + 106533.

2^2556516 is an apocalyptic number.

It is an amenable number.

2556516 is an abundant number, since it is smaller than the sum of its proper divisors (3408716).

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

2556516 is a wasteful number, since it uses less digits than its factorization.

2556516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213050 (or 213048 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 2556516 is about 1598.9108793175. The cubic root of 2556516 is about 136.7359896835.

The spelling of 2556516 in words is "two million, five hundred fifty-six thousand, five hundred sixteen".