2461405 has 4 divisors (see below), whose sum is σ = 2953692. Its totient is φ = 1969120.

The previous prime is 2461399. The next prime is 2461409. The reversal of 2461405 is 5041642.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5041642 = 2 ⋅2520821.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 1951609 = 714^2 + 1397^2 .

It is not a de Polignac number, because 2461405 - 2³ = 2461397 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 (2461409) 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, 246136 + ... + 246145.

It is an arithmetic number, because the mean of its divisors is an integer number (738423).

2^2461405 is an apocalyptic number.

It is an amenable number.

2461405 is a deficient number, since it is larger than the sum of its proper divisors (492287).

2461405 is an equidigital number, since it uses as much as digits as its factorization.

2461405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492286.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2461405 is about 1568.8865478421. The cubic root of 2461405 is about 135.0188359635.

The spelling of 2461405 in words is "two million, four hundred sixty-one thousand, four hundred five".