2556536 has 8 divisors (see below), whose sum is σ = 4793520. Its totient is φ = 1278264.

The previous prime is 2556523. The next prime is 2556559. The reversal of 2556536 is 6356552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159776 + ... + 159791.

It is an arithmetic number, because the mean of its divisors is an integer number (599190).

2^2556536 is an apocalyptic number.

It is an amenable number.

2556536 is a deficient number, since it is larger than the sum of its proper divisors (2236984).

2556536 is a wasteful number, since it uses less digits than its factorization.

2556536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319573 (or 319569 counting only the distinct ones).

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

The square root of 2556536 is about 1598.9171335626. The cubic root of 2556536 is about 136.7363462511.

The spelling of 2556536 in words is "two million, five hundred fifty-six thousand, five hundred thirty-six".