2105461 has 4 divisors (see below), whose sum is σ = 2130912. Its totient is φ = 2080012.

The previous prime is 2105449. The next prime is 2105483. The reversal of 2105461 is 1645012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105461 is a prime.

It is a Duffinian number.

2105461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12601 + ... + 12766.

It is an arithmetic number, because the mean of its divisors is an integer number (532728).

2^2105461 is an apocalyptic number.

It is an amenable number.

2105461 is a deficient number, since it is larger than the sum of its proper divisors (25451).

2105461 is an equidigital number, since it uses as much as digits as its factorization.

2105461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25450.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2105461 is about 1451.0206752490. The cubic root of 2105461 is about 128.1688242708.

It can be divided in two parts, 21054 and 61, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 2105461 in words is "two million, one hundred five thousand, four hundred sixty-one".