2521365 has 64 divisors (see below), whose sum is σ = 5253120. Its totient is φ = 1002240.

The previous prime is 2521361. The next prime is 2521367. The reversal of 2521365 is 5631252.

2521365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521365 - 2² = 2521361 is a prime.

2521365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42706 + ... + 42764.

It is an arithmetic number, because the mean of its divisors is an integer number (82080).

2^2521365 is an apocalyptic number.

It is an amenable number.

2521365 is an abundant number, since it is smaller than the sum of its proper divisors (2731755).

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

2521365 is a wasteful number, since it uses less digits than its factorization.

2521365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122.

The product of its digits is 1800, while the sum is 24.

The square root of 2521365 is about 1587.8806630223. The cubic root of 2521365 is about 136.1064082167.

The spelling of 2521365 in words is "two million, five hundred twenty-one thousand, three hundred sixty-five".