2555550 has 60 divisors (see below), whose sum is σ = 7111896. Its totient is φ = 680400.

The previous prime is 2555549. The next prime is 2555551. The reversal of 2555550 is 555552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2555549) and next prime (2555551).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555551) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3735 + ... + 4365.

2^2555550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3555948).

2555550 is an abundant number, since it is smaller than the sum of its proper divisors (4556346).

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

2555550 is a wasteful number, since it uses less digits than its factorization.

2555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 2555550 is about 1598.6087701498. The cubic root of 2555550 is about 136.7187652517.

The spelling of 2555550 in words is "two million, five hundred fifty-five thousand, five hundred fifty".