2461821 has 8 divisors (see below), whose sum is σ = 3475584. Its totient is φ = 1544640.

The previous prime is 2461819. The next prime is 2461831. The reversal of 2461821 is 1281642.

2461821 = 519² + 520² + ... + 527².

2461821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2461821 - 2¹ = 2461819 is a prime.

2461821 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2461791 and 2461800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2461801) 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, 24085 + ... + 24186.

It is an arithmetic number, because the mean of its divisors is an integer number (434448).

2^2461821 is an apocalyptic number.

It is an amenable number.

2461821 is a deficient number, since it is larger than the sum of its proper divisors (1013763).

2461821 is a wasteful number, since it uses less digits than its factorization.

2461821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48291.

The product of its digits is 768, while the sum is 24.

The square root of 2461821 is about 1569.0191203424. The cubic root of 2461821 is about 135.0264420085.

The spelling of 2461821 in words is "two million, four hundred sixty-one thousand, eight hundred twenty-one".