2556650 has 12 divisors (see below), whose sum is σ = 4755462. Its totient is φ = 1022640.

The previous prime is 2556641. The next prime is 2556661. The reversal of 2556650 is 566552.

It can be written as a sum of positive squares in 3 ways, for example, as 2283121 + 273529 = 1511^2 + 523^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25517 + ... + 25616.

2^2556650 is an apocalyptic number.

2556650 is a deficient number, since it is larger than the sum of its proper divisors (2198812).

2556650 is a wasteful number, since it uses less digits than its factorization.

2556650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51145 (or 51140 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2556650 is about 1598.9527822922. The cubic root of 2556650 is about 136.7383786512.

The spelling of 2556650 in words is "two million, five hundred fifty-six thousand, six hundred fifty".