2556534 has 8 divisors (see below), whose sum is σ = 5113080. Its totient is φ = 852176.

The previous prime is 2556523. The next prime is 2556559. The reversal of 2556534 is 4356552.

It is a sphenic number, since it is the product of 3 distinct primes.

2556534 is an admirable number.

It is a d-powerful number, because it can be written as 2¹⁹ + 5 + 5⁷ + 6 + 5⁹ + 3⁶ + 4⁴ .

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, 213039 + ... + 213050.

It is an arithmetic number, because the mean of its divisors is an integer number (639135).

2^2556534 is an apocalyptic number.

2556534 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.

2556534 is a wasteful number, since it uses less digits than its factorization.

2556534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426094.

The product of its digits is 18000, while the sum is 30.

The square root of 2556534 is about 1598.9165081392. The cubic root of 2556534 is about 136.7363105944.

The spelling of 2556534 in words is "two million, five hundred fifty-six thousand, five hundred thirty-four".