2421566 has 8 divisors (see below), whose sum is σ = 4151280. Its totient is φ = 1037808.

The previous prime is 2421553. The next prime is 2421577. The reversal of 2421566 is 6651242.

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

It is a congruent number.

It is an unprimeable number.

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, 86471 + ... + 86498.

It is an arithmetic number, because the mean of its divisors is an integer number (518910).

2^2421566 is an apocalyptic number.

2421566 is a deficient number, since it is larger than the sum of its proper divisors (1729714).

2421566 is a wasteful number, since it uses less digits than its factorization.

2421566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172978.

The product of its digits is 2880, while the sum is 26.

The square root of 2421566 is about 1556.1381686727. The cubic root of 2421566 is about 134.2864223162.

The spelling of 2421566 in words is "two million, four hundred twenty-one thousand, five hundred sixty-six".