2565351 has 36 divisors (see below), whose sum is σ = 4251312. Its totient is φ = 1539648.

The previous prime is 2565349. The next prime is 2565377. The reversal of 2565351 is 1535652.

2565351 is a `hidden beast` number, since 2 + 5 + 653 + 5 + 1 = 666.

It is not a de Polignac number, because 2565351 - 2¹ = 2565349 is a prime.

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 (2565391) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 111526 + ... + 111548.

It is an arithmetic number, because the mean of its divisors is an integer number (118092).

2^2565351 is an apocalyptic number.

2565351 is a deficient number, since it is larger than the sum of its proper divisors (1685961).

2565351 is an frugal number, since it uses more digits than its factorization.

2565351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 43 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 2565351 is about 1601.6713145961. The cubic root of 2565351 is about 136.8933227488.

It can be divided in two parts, 2565 and 351, that added together give a square (2916 = 54²).

The spelling of 2565351 in words is "two million, five hundred sixty-five thousand, three hundred fifty-one".