2556550 has 12 divisors (see below), whose sum is σ = 4755276. Its totient is φ = 1022600.

The previous prime is 2556523. The next prime is 2556559. The reversal of 2556550 is 556552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25516 + ... + 25615.

It is an arithmetic number, because the mean of its divisors is an integer number (396273).

2^2556550 is an apocalyptic number.

2556550 is a deficient number, since it is larger than the sum of its proper divisors (2198726).

2556550 is a wasteful number, since it uses less digits than its factorization.

2556550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51143 (or 51138 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 2556550 is about 1598.9215115196. The cubic root of 2556550 is about 136.7365958474.

The spelling of 2556550 in words is "two million, five hundred fifty-six thousand, five hundred fifty".