2530405 has 8 divisors (see below), whose sum is σ = 3048984. Its totient is φ = 2016000.

The previous prime is 2530403. The next prime is 2530427. The reversal of 2530405 is 5040352.

It is a happy number.

2530405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 103041 + 2427364 = 321^2 + 1558^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2530405 - 2¹ = 2530403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530403) 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 7 ways as a sum of consecutive naturals, for example, 505 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (381123).

2^2530405 is an apocalyptic number.

It is an amenable number.

2530405 is a deficient number, since it is larger than the sum of its proper divisors (518579).

2530405 is a wasteful number, since it uses less digits than its factorization.

2530405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 2530405 is about 1590.7246776234. The cubic root of 2530405 is about 136.2688776694.

Adding to 2530405 its reverse (5040352), we get a palindrome (7570757).

The spelling of 2530405 in words is "two million, five hundred thirty thousand, four hundred five".