2452405 has 4 divisors (see below), whose sum is σ = 2942892. Its totient is φ = 1961920.

The previous prime is 2452399. The next prime is 2452409. The reversal of 2452405 is 5042542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5042542 = 2 ⋅2521271.

It can be written as a sum of positive squares in 2 ways, for example, as 872356 + 1580049 = 934^2 + 1257^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2452405 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 (2452409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245236 + ... + 245245.

It is an arithmetic number, because the mean of its divisors is an integer number (735723).

2^2452405 is an apocalyptic number.

It is an amenable number.

2452405 is a deficient number, since it is larger than the sum of its proper divisors (490487).

2452405 is an equidigital number, since it uses as much as digits as its factorization.

2452405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490486.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2452405 is about 1566.0156448772. The cubic root of 2452405 is about 134.8540718541.

Adding to 2452405 its reverse (5042542), we get a palindrome (7494947).

The spelling of 2452405 in words is "two million, four hundred fifty-two thousand, four hundred five".