2565550 has 24 divisors (see below), whose sum is σ = 5140296. Its totient is φ = 947040.

The previous prime is 2565463. The next prime is 2565559. The reversal of 2565550 is 555652.

2565550 is nontrivially palindromic in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1324 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (214179).

2^2565550 is an apocalyptic number.

2565550 is an abundant number, since it is smaller than the sum of its proper divisors (2574746).

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

2565550 is a wasteful number, since it uses less digits than its factorization.

2565550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972 (or 3967 counting only the distinct ones).

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

The square root of 2565550 is about 1601.7334359999. The cubic root of 2565550 is about 136.8968623641.

The spelling of 2565550 in words is "two million, five hundred sixty-five thousand, five hundred fifty".